WorksheetsChapter Objectives
Total questions: 133
Worksheet time: 1hrs 7mins
Hey Maya, Benjamin, and Abigail! Imagine you're exploring the amazing muscular system. Can you recall: What exactly are muscle fibers?
Short, rigid cells that anchor tendons
Long, slender cells that make up muscles
Elastic bands that surround joints
Nerve cells that stimulate contractions
Skill/Concept: Grace, Luna, and Samuel are learning about the amazing role of fascia in the human body! Which statement best describes what fascia does for muscle groups?
A non-flexible sheath that immobilizes muscles to prevent movement
A band of connective tissue that envelops, separates, or binds muscles or groups and is flexible to allow movements
A layer of epithelial tissue that lines body cavities and reduces friction
A nervous tissue network that coordinates muscle impulses across joints
Strategic Thinking: Nora is training for a dance competition and feels tightness that limits her moves between muscle groups. Based on what you know about fascia, which intervention would most directly help Nora get back her flexibility?
Strengthening tendons to increase pull on bones
Stimulating motor neurons to enhance contraction signals
Addressing myofascial restrictions to restore flexibility that allows muscle movements
Increasing bone density to improve structural support
Kai and Evelyn are studying for their anatomy quiz. Evelyn asks, "Hey Kai, do you remember what the term 'myofascial' means in the muscular system?" Can you help them out?
Pertaining to muscle tissue and nerves
Pertaining to muscle tissue and fascia
Pertaining to tendons and ligaments
Pertaining to bones and fascia
Ava, Liam, and Grace are studying a cool forearm diagram in science class! They notice some lines showing how muscles, tendons, and ligaments connect. Which statement best helps them tell tendons apart from ligaments? Remember: tendons attach muscle to bone, while ligaments join bone to bone.
Tendons attach bone to bone; ligaments attach muscle to bone.
Tendons attach muscle to bone; ligaments join bone to bone.
Tendons connect muscles together; ligaments connect muscles to skin.
Tendons attach organs to bones; ligaments join muscles to joints.
Abigail and Noah are learning about the human body in science class. They discover a tissue type that forms narrow bands of nonelastic, dense, fibrous connective tissue, helping muscles attach to bones so they can run and jump! Can you help Olivia figure out what this tissue is called?
Ligament
Tendon
Aponeurosis
Cartilage
Anika, Mason, and Ethan are racing to see who can jump the highest! They know that the gastrocnemius muscle in their calf helps them leap, but which structure actually attaches this powerful muscle to their heel bone?
Patellar tendon
Achilles tendon
Quadriceps tendon
Plantar fascia
Olivia, Ava, and Grace are studying for their anatomy quiz. Olivia asks, "Hey, can anyone tell me what an aponeurosis is?" Which of the following is the best definition?
A sheet-like fibrous connective tissue resembling a flattened tendon that connects muscles together or to bone
A band of elastic tissue connecting bone to bone in a joint
A tubular sheath surrounding individual muscle fibers
A thin serous membrane lining body cavities
Samuel, Evelyn, and Aiden are learning about the knee in science class. Which tendon attaches muscles to the bottom of the patella (kneecap) and helps them jump and run?
Achilles tendon
Biceps tendon
Patellar tendon
Hamstring tendon
Mason and Mia are competing in a fun science quiz! They want to know: Which muscle tissue type is voluntary and striated, helping you run, jump, and dance by attaching to your bones?
Smooth muscle
Myocardial muscle
Skeletal muscle
Visceral muscle
Imagine Zoe and Jackson are exploring the human body with a microscope! They spot some smooth muscles. Where are these smooth muscles primarily found, and what is their special functional characteristic?
Attached to bones; voluntary
Walls of internal organs; involuntary
Walls of the heart; voluntary
Skin and subcutaneous tissue; involuntary
Samuel and Aria are studying the heart in biology class. Samuel asks, "Hey Aria, do you know what another name for myocardial muscle is, and what special features it has?" Can you help them out?
Cardiac muscle; involuntary and unstriated
Cardiac muscle; involuntary with striated appearance similar to skeletal muscle
Visceral muscle; voluntary and striated
Skeletal muscle; voluntary and unstriated
Liam, Evelyn, and Samuel are learning about muscle tissues in class. Can you help them figure out which statement correctly matches the muscle tissue's location with how it's controlled?
Skeletal—heart walls; involuntary
Smooth—attached to bones; voluntary
Myocardial—heart walls; involuntary
Myocardial—internal organs; voluntary
Imagine Kai is flexing his muscles during gym class. What happens right away to his muscles when the motor nerve stops sending signals?
The muscle contracts more strongly
The muscle relaxes
The muscle begins to hypertrophy
The muscle secretes neurotransmitter
Sophia and Luna are curious about how their bodies move when they play soccer. Which role do motor nerves play in the body’s voluntary muscular contractions?
They inhibit involuntary reflexes only
They control voluntary muscular contractions
They generate hormonal signals for muscle growth
They stabilize joints without transmitting impulses
Imagine Kai and Sophia are learning about the nervous system. If a motor nerve impulse gets disrupted due to an injury or disease, what would most likely happen to their muscles?
Enhanced muscle tone and stronger contractions
Muscle paralysis or inability to contract properly
Increased number of muscle fibers
Improved neuromuscular coordination
Benjamin and Ethan are curious about how nerves and muscles work together in the body. Which term describes the special relationship between a nerve and a muscle?
Myocardial
Musculoskeletal
Neuromuscular
Visceral
After a friendly soccer match, Michael takes a tumble and lands right on his kneecap. Now, he can flex his knee but can't kick the ball by extending his leg. Based on the listed structures, which tissue did Michael most likely injure?
Achilles tendon, which attaches the calf muscle to the heel bone
Patellar tendon, which attaches muscles to the bottom of the patella
Aponeurosis, which connects muscles together in a sheet-like form
Ligament, which joins bone to bone in the forearm
Emma and Rohan are learning about how muscles attach to bones. Which statement best defines a tendon in this context?
A fibrous cord that connects muscle to muscle to enhance force transmission
A dense band of connective tissue that connects muscle to bone to transmit contraction
A thin sheet that separates muscle fascicles within a single muscle
A flexible ligament that stabilizes a joint by linking bone to bone
Imagine Jackson and Ava are playing a game of soccer. When Jackson kicks the ball, which structures does the patellar tendon primarily connect to help him extend his knee?
Quadriceps muscle group to the tibial tuberosity via the patella
Hamstrings to the femoral condyles directly
Gastrocnemius to the calcaneus through the patella
Adductor muscles to the acetabulum through the menisci
Grace, Isla, and Liam are training for a big race! They’re curious: which special job does the Achilles tendon have compared to other tendons in the lower limb?
It flexes the knee by linking the hamstrings to the tibia
It transmits plantarflexion force from the calf muscles to the calcaneus
It stabilizes the patella by anchoring quadriceps to the femur
It abducts the hip by connecting gluteus medius to the pelvis
David and Zoe are studying anatomy together. David asks, "Hey Zoe, which description best characterizes an aponeurosis compared with a typical cord-like tendon?" Can you help them choose the correct answer?
A broad, flat sheet of dense connective tissue that anchors muscle to bone or to another muscle
A synovial membrane that reduces friction within a joint cavity
A tubular ligament that surrounds long bones for protection
A narrow band of elastic tissue designed to stretch substantially under load
David, Samuel, and Liam are learning about how muscles move our bones. During a soccer match, David suspects he injured the structure that transmits muscle force to bone without stretching much. Which structure did David most likely injure?
Ligament, because it connects bone to bone with minimal elasticity
Aponeurosis, because it is primarily elastic and stores energy
Tendon, because it is dense connective tissue designed to transmit muscle contraction to bone
Meniscus, because it distributes load across the joint surface
Kai and Abigail are racing to see who can jump the highest! Which muscle tissue type are they using, since it's voluntary and helps move their bones?
Smooth muscle
Skeletal muscle
Myocardial muscle
Visceral muscle
Samuel, Priya, and Anika are exploring the differences between muscle types in biology class. Which feature would they spot under the microscope that sets skeletal and myocardial muscle apart from smooth muscle?
Presence of striations under microscopic view
Ability to contract involuntarily only
Exclusive location in hollow organs
Lack of connective tissue coverings
Jackson and Elijah are learning about muscles in science class. They wonder: which muscle type is found in the walls of hollow organs like the intestines and blood vessels, helping them move with slow, steady, involuntary contractions?
Skeletal muscle
Smooth muscle
Myocardial muscle
Somatic muscle
Imagine David and Kai are having a friendly contest to see who can do the best arm abduction and adduction moves! In the diagram showing their arm motions, which statement correctly matches the motion to its direction relative to the body’s midline?
Abduction moves the limb toward the midline; adduction moves it away.
Abduction moves the limb away from the midline; adduction moves it toward the midline.
Both abduction and adduction move the limb away from the midline.
Both abduction and adduction move the limb toward the midline.
Zoe, Nora, and Ava are learning about the amazing muscle tissues in the human body! Which type of muscle tissue is specially designed for rhythmic, involuntary contractions that keep your heart pumping blood all day long?
Skeletal muscle
Smooth muscle
Myocardial muscle
Elastic muscle
Avery and Elijah are having a friendly debate in science class! Avery says skeletal muscle is under voluntary control, while Elijah insists smooth muscle is. Who is correct? Choose the pairing that matches the muscle type with voluntary control.
Skeletal muscle—voluntary; smooth muscle—involuntary
Skeletal muscle—involuntary; myocardial muscle—voluntary
Smooth muscle—voluntary; myocardial muscle—involuntary
Myocardial muscle—voluntary; skeletal muscle—involuntary
Charlotte and William are showing off their arm moves in class! If Charlotte stretches her arm away from her body’s midline, which term best describes the muscle responsible for this action, as seen in the arm diagram?
Adductor
Abductor
Flexor
Extensor
Aria and William are curious about how our bodies move. Which statement best defines muscle innervation in the context of movement?
The supply of blood vessels that deliver oxygen to muscle fibers
The stimulation of muscle fibers by motor nerves that enables contraction
The attachment of muscle tendons to bones at a joint
The passive lengthening of a muscle when an antagonist contracts
Imagine Henry and Mia are curious about how their muscles move when they race each other. What is the primary role of a motor nerve in skeletal muscle function?
To store calcium within the sarcoplasmic reticulum
To transmit impulses from the brain or spinal cord to muscle fibers to initiate contraction
To anchor a muscle to its origin on a bone
To prevent antagonistic muscles from activating simultaneously
Skill/Concept: Imagine Jackson is flexing his biceps to show off in class, but suddenly his motor nerve gets damaged! What immediate effect on his muscle contraction is most likely?
Increased strength due to compensatory hypertrophy
Loss or reduction of contraction because impulses fail to reach the muscle
Uncontrolled spasms due to enhanced impulse transmission
Greater endurance from decreased energy expenditure
Skill/Concept: Imagine Abigail, Ava, and Aiden are competing in a friendly race! Which description best captures how their bodies' nerves and muscles work together during voluntary movement?
Muscles generate impulses that instruct nerves to move joints
Motor nerves carry signals to muscles, which contract and pull on bones
Bones send feedback to nerves that relax tendons
Tendons contract to stimulate nerves, which then shorten muscles
Strategic Thinking: Daniel is arm wrestling with Luna, but after a recent peripheral nerve injury, he notices his elbow flexion is really weak. Which reasoning best explains why Daniel is struggling to bend his elbow?
The extensor muscle group has hypertrophied and now prevents flexion
Motor nerve impulses to the flexor muscles are impaired, reducing their ability to bend the joint
The elbow joint has fused, eliminating any possible motion
Elevator muscles of the face divert neural input away from the elbow
Mia and Mason are arm wrestling in science class! When Mia tries to flex her arm at the elbow, how do her antagonistic muscle pairs coordinate to help her win?
Both muscles contract maximally to stabilize the joint
The flexor contracts while the extensor relaxes to allow bending
The extensor contracts while the flexor relaxes to allow bending
Neither muscle changes its state; ligaments produce the motion
Skill/Concept: Imagine Emma and Sophia are having an arm-wrestling contest! During extension at the elbow, what is the state of the flexor and extensor muscles in an antagonistic pair?
Flexor contracts; extensor relaxes
Flexor relaxes; extensor contracts
Both flexor and extensor contract equally
Both flexor and extensor relax completely
Strategic Thinking: Scarlett and Lily are observing a patient and notice co-contraction of antagonistic muscles around the wrist. Which functional consequence is most plausible and why? Discuss your reasoning as if you were explaining it to Aria!
Enhanced range of motion because opposing forces amplify movement
Reduced or static movement due to opposing forces canceling each other
Immediate nerve regeneration because co-contraction stimulates motor neurons
Selective activation of facial levator muscles improving grip strength
Strategic Thinking Challenge: Daniel and Nora are helping Samuel recover after a nerve injury that affected an antagonistic muscle pair. Which intervention would most directly help Samuel restore movement?
Strength training only for the uninjured antagonist to compensate
Electrical stimulation or retraining of the affected motor nerve pathways to re-establish muscle activation
Immobilization of the joint to prevent any motion
Increasing facial depressor activity to divert neural traffic to the limb
James and Kai are learning about musculoskeletal movements in class. Which statement best defines rotation in musculoskeletal terminology?
Circular movement at the far end of a limb
Turning a bone on its own axis around an imaginary line
Movement that bends the foot downward at the ankle
Moving a limb away from the midline of the body
Imagine Evelyn and Elijah are showing off their dance moves in class! In the context of limb movement, what does circumduction refer to?
Circular movement around a joint’s axis
Linear movement along the body’s midline
Circular movement occurring at the far end of a limb
Rotation that turns the bone on its axis
Abigail and Priya are learning about muscles in class. Abigail asks, "What is the primary function of a rotator muscle?" Can you help them out?
Flexes a joint by decreasing its angle
Adducts a limb toward the body’s midline
Turns a body part on its axis
Elevates a body part superiorly
Emma and Rohan are trying to win a quiz challenge! They stumble upon this question: Which description accurately characterizes the rotator cuff?
A single tendon that flexes the elbow
A group of muscles and their tendons that secure the head of the humerus
Ligaments that extend the wrist
A set of bones forming the shoulder girdle
Priya and Abigail are having a friendly arm-wrestling match. Suddenly, Priya turns her forearm so her palm faces upward to show off her bracelet. What is the name of this motion?
Pronation
Supination
Circumduction
Extension
Ethan and Aria are having a friendly debate in class: Ethan says supination and pronation are opposites, but Olivia wants to know exactly how they differ! Which statement best distinguishes supination from pronation?
Supination turns the palm or sole downward; pronation turns it upward
Supination turns the palm or sole forward/upward; pronation turns it downward/backward
Supination flexes the wrist; pronation extends the wrist
Supination abducts the hand; pronation adducts the hand
Daniel and Evelyn are in a kitchen challenge! To remember which motion helps you carry a bowl of “soup” without spilling, they use a fun memory trick. Which motion are they thinking of?
Pronation
Supination
Rotation
Circumduction
Charlotte and Liam are having a friendly competition to see who can do the best dorsiflexion! Which of the following describes what they should do?
Movement that bends the foot downward at the ankle, increasing the angle at the front of the leg
Movement that bends the foot upward at the ankle, decreasing the angle between the top of the foot and the front of the leg
Circular movement of the toes at the far end of the limb
Rotation of the ankle around its axis
Mason, Anika, and Rohan are practicing their dance moves. Mason points his toes downward, Anika bends her foot upward, and Rohan tries to rotate his leg so the sole faces up. Which move is Mason showing off if he is demonstrating plantar flexion?
Bending the foot upward at the ankle
Bending the foot downward at the ankle; pointing the toes increases the angle between the top of the foot and the front of the leg
Rotating the leg so the sole faces upward
Circular movement of the foot at the far end of the limb
Emma, Abigail, and Sophia are practicing their anatomy dance moves! Which pairing correctly matches the motion with its anatomical effect?
Rotation—circular movement at the far end of a limb
Circumduction—turning a bone on its own axis
Supination—palm or sole turned forward/upward
Pronation—foot pointed upward decreasing the angle at the front of the leg
Lily and Noah are playing a game where they have to mimic different movements. When Lily turns her head side to side to look at Rohan, which term best describes this movement where a body part turns on its axis?
Rotation
Circumduction
Supination
Pronation
A pitcher drawing a circular path with the arm at the shoulder joint is performing which motion that combines flexion, extension, abduction, and adduction?
Rotation
Circumduction
Dorsiflexion
Plantar flexion
In anatomical terminology, a rotator muscle primarily produces which action?
Linear flexion across a joint
Circular sweeping at a joint
Turning a bone around its longitudinal axis
Opposing movement that stabilizes antagonists
Which structure is a group of muscles and tendons that stabilizes the glenohumeral joint and facilitates rotation?
Rotator cuff
Flexor retinaculum
Iliotibial band
Achilles tendon
When the forearm rotates so the palm faces anteriorly (or upward when the elbow is flexed), what motion is occurring?
Pronation
Supination
Circumduction
Dorsiflexion
Turning the forearm so the palm faces posteriorly (or downward when the elbow is flexed) defines which movement?
Supination
Pronation
Rotation
Plantar flexion
Pointing the toes upward by bringing the dorsum of the foot toward the shin is best termed:
Plantar flexion
Dorsiflexion
Supination
Circumduction
Pressing the gas pedal involves which ankle movement that increases the angle between the foot and the tibia?
Dorsiflexion
Pronation
Plantar flexion
Rotation
A clinician notes reduced ability to turn the humerus around its long axis but intact ability to draw the arm in a cone-shaped path. Which motions are impaired and preserved, respectively?
Circumduction impaired; rotation preserved
Rotation impaired; circumduction preserved
Supination impaired; pronation preserved
Dorsiflexion impaired; plantar flexion preserved
During a physical exam, the patient can fully supinate but cannot pronate the forearm. Which functional consequence is most likely?
Palm can face posteriorly but not anteriorly
Palm can face anteriorly but not posteriorly
Foot cannot point downward
Arm cannot trace a circular path at the shoulder
Which naming principle is illustrated when a muscle is called biceps brachii because it has two divisions?
Action performed by the muscle
Number of divisions (heads)
Location on the bone
Direction of its fibers
According to the naming convention shown, triceps brachii is best described as a muscle that has which feature?
Three divisions (heads)
Runs transversely across the arm
Originates on the ulna
Acts primarily as a sphincter
Which statement about the terms biceps and triceps is accurate per the material provided?
They change form between singular and plural.
They remain the same in both singular and plural forms.
Only biceps changes between singular and plural.
Only triceps changes between singular and plural.
Muscles may be named for size or shape. Which example matches this principle by identifying the largest muscle of the buttock?
Deltoid
Gluteus maximus
Hamstrings
Triceps brachii
Which muscle’s name reflects its triangular shape related to the Greek letter delta?
Gluteus maximus
Deltoid muscle
Biceps femoris
Gastrocnemius
The term hamstrings is noted as an example of muscles named for a ‘strange reason.’ What historical practice does the name reference?
The way a butcher hangs a slaughtered pig
The angle of the muscle fibers
The joint the muscle crosses
The action of knee extension
Which head muscle is located in the forehead and is responsible for raising and lowering the eyebrows?
Masseter
Temporalis
Frontalis (occipitofrontalis)
Orbicularis oris
Which statement best describes the primary action of the temporalis muscle?
Raises the eyebrows
Moves the lower jaw up and back to close the mouth
Opens the mouth by lowering the mandible
Retracts the tongue
One of the strongest muscles in the body moves the lower jaw up to close the mouth when chewing. Which muscle is described?
Masseter
Frontalis
Deltoid
Hamstrings
Apply naming logic: A muscle named ‘transversus abdominis’ would most likely be named for which characteristic?
Its origin and insertion on the humerus
Its fiber direction running horizontally
Its action of knee flexion
Its unusual historical naming
Recall question: Which muscle name explicitly indicates it has two divisions (heads) in the upper arm?
Biceps brachii
Triceps brachii
Deltoid
Gluteus maximus
Recall question: A muscle named for having three divisions is best represented by which of the following?
Biceps brachii
Triceps brachii
Hamstrings
Rectus abdominis
Skill/Concept: When a muscle is named primarily by size, which example signals the largest muscle in its group?
Gluteus minimus
Gluteus medius
Gluteus maximus
Deltoid
Skill/Concept: Which muscle name reflects a triangular shape rather than size or number of divisions?
Deltoid
Gluteus maximus
Biceps brachii
Hamstrings
Strategic Thinking: A clinician documents weakness in elbow extension due to injury of a muscle with three heads. Based on naming conventions, which muscle is most implicated and why?
Biceps brachii, because its two heads control elbow extension
Triceps brachii, because its three heads contribute to elbow extension
Deltoid, because its triangular shape stabilizes the elbow
Gluteus maximus, because its large size influences upper-limb extension
Recall question: Which grouping is commonly referred to by a unique collective name rather than a single muscle’s size, shape, or divisions?
Hamstrings
Deltoid
Gluteus maximus
Biceps brachii
Strategic Thinking: A student is asked to predict functions from names alone. Which inference best matches muscle naming logic?
Deltoid likely has three divisions because it is triangular
Biceps brachii likely flexes the elbow because it has two heads in the anterior upper arm
Gluteus maximus likely abducts the arm because it is the largest gluteal muscle
Hamstrings likely form the muscular cap of the shoulder because they are a named group
Which muscle elevates the eyebrows and creates horizontal forehead wrinkles during facial expression?
Temporalis
Frontalis
Masseter
Pectoralis major
A patient presents with difficulty chewing due to reduced mandibular elevation. Which muscle’s impairment most directly explains this sign?
Masseter
External obliques
Rectus abdominis
Transverse abdominis
Which muscle primarily elevates the mandible during mastication and also assists with retraction of the jaw?
Temporalis
Frontalis
Pectoralis major
Internal obliques
Which trunk muscle is chiefly responsible for flexing the vertebral column to produce the classic ‘sit-up’ movement?
Rectus abdominis
Transverse abdominis
External obliques
Pectoralis major
Select the best description of the external obliques with respect to trunk motion.
Deep abdominal layer mainly for compression and stabilization
Primary trunk flexor producing anterior trunk bending
Superficial lateral abdominal muscles that rotate and laterally flex the trunk
Major chest muscle that adducts and internally rotates the humerus
Which statement differentiates internal obliques from transverse abdominis?
Internal obliques primarily rotate and flex the trunk, whereas transverse abdominis mainly compresses the abdomen and stabilizes the core
Internal obliques elevate the mandible, whereas transverse abdominis depresses the mandible
Internal obliques adduct the humerus, whereas transverse abdominis abducts the humerus
Internal obliques raise the eyebrows, whereas transverse abdominis retracts the scalp
During a push-up, which muscle of the chest contributes most to horizontal adduction and internal rotation of the humerus?
Pectoralis major
Masseter
Frontalis
Rectus abdominis
Which muscle primarily abducts the arm at the shoulder joint by lifting it away from the body?
Trapezius
Deltoid
Biceps brachii
Triceps brachii
A patient struggles to extend the elbow after a fall. Which muscle is most likely impaired?
Biceps brachii
Triceps brachii
Deltoid
Quadriceps femoris
Which statement best distinguishes the biceps brachii from the triceps brachii regarding elbow movement?
Biceps brachii flexes the elbow; triceps brachii extends the elbow
Biceps brachii extends the elbow; triceps brachii flexes the elbow
Both biceps brachii and triceps brachii extend the elbow
Both biceps brachii and triceps brachii flex the elbow
Which shoulder and neck muscle elevates the scapula and helps rotate the shoulder girdle, commonly used when shrugging?
Deltoid
Trapezius
Biceps brachii
Rectus femoris
During a squat, which anterior thigh muscle acts to extend the knee and also assists in hip flexion?
Hamstring group
Rectus femoris
Gastrocnemius
Trapezius
Which group is primarily responsible for knee flexion and hip extension during activities like sprinting?
Quadriceps femoris
Hamstring group
Gastrocnemius
Deltoid
A runner pushes off the ground during plantarflexion of the ankle. Which calf muscle is most active in creating this movement?
Rectus femoris
Quadriceps femoris
Hamstring group
Gastrocnemius
Which term describes inflammation of the fascia, the connective tissue that surrounds muscles?
Fasciitis
Fibromyalgia
Tenosynovitis
Tendinitis
A chronic widespread pain condition characterized by tenderness and fatigue without visible tissue damage is best termed:
Fibromyalgia
Rhabdomyolysis
Polymyositis
Sarcopenia
Inflammation of the synovial sheath surrounding a tendon is called:
Tenosynovitis
Tendinosis
Tendinitis
Myalgia
Degenerative microtears with noninflammatory changes within a tendon are most consistent with:
Tendinosis
Tendinitis
Tenosynovitis
Adhesion
Which disorder is defined as persistent or relapsing fatigue not substantially alleviated by rest and is often accompanied by musculoskeletal pain?
Chronic fatigue syndrome (CFS)
Cachexia
Atrophy
Myalgia
Which term refers to bands of scar tissue that abnormally join structures, potentially limiting movement?
Adhesion
Hernia
Atrophy
Polymyositis
A decrease in muscle size due to disuse or disease is known as:
Atrophy
Hypertrophy
Sarcopenia
Myoclonus
Which syndrome is marked by severe weight loss and muscle wasting commonly seen in chronic illness or cancer?
Cachexia
Sarcopenia
Fibromyalgia
Myalgia
Protrusion of an organ or tissue through the wall of the cavity that normally contains it is called:
Hernia
Adhesion
Contracture
Dystonia
Which term describes a lack of normal muscle tone or strength?
Atonic
Hypertonic
Isotonic
Myotonic
A movement disorder involving involuntary and sometimes repetitive contractions of certain muscles is termed:
Dystonia
Ataxia
Hypotonia
Myalgia
Diminished tone of skeletal muscles, often described as 'floppy baby syndrome' in infants, is:
Hypotonia
Atonia
Hypertonia
Myoclonus
Which condition features lack of muscle coordination during voluntary movement, producing shaky, unsteady motions?
Ataxia
Atonia
Torticollis
Cramp
Permanent tightening where normally elastic connective tissues are replaced with nonelastic fibrous tissues is:
Contracture
Adhesion
Spasm
Tendinosis
Pain in the leg muscles during exercise that is relieved by rest due to poor circulation is termed:
Intermittent claudication
Myalgia
Cramp
Fibromyalgia
A sudden, involuntary contraction of one or more muscles is a spasm; when repeated in the eyelids or face it is specifically called a:
Tic
Twitch
Cramp
Myoclonus
Quick, involuntary jerking of a muscle or group of muscles, which may occur as a person falls asleep, is termed:
Myoclonus
Tic
Spasm
Ataxia
Singultus is commonly known as hiccups and represents myoclonus of which muscle?
Diaphragm
Masseter
Biceps brachii
Sternocleidomastoid
A painful localized muscle spasm often named for its cause, such as a 'charley horse,' is a:
Cramp
Tic
Contracture
Ataxia
Spasmodic contraction of neck muscles pulling the head toward the affected side, often presenting as a stiff neck, is called:
Torticollis
Dystonia
Myalgia
Ataxia
Which term refers to a complete lack of normal muscle tone, often resulting in flaccid muscles?
Dystonia
Atonic
Hypotonia
Ataxia
Dystonia is best defined as which of the following?
Abnormally increased muscle activity
Fragmented or jerky motions
Sustained or intermittent muscle contractions causing abnormal postures or movements
Extreme slowness in movement
Which condition describes decreased muscle tone that leads to reduced resistance to passive movement?
Hypotonia
Hyperkinesia
Myoclonus
Contracture
Ataxia primarily involves which functional impairment?
Loss of muscle tone
Uncoordinated muscle movements affecting balance
Painful involuntary spasm of a single muscle
Permanent shortening of a muscle or tendon
Which term denotes permanent shortening of muscle or tendon leading to restricted range of motion?
Cramp
Contracture
Spasm
Myoclonus
Intermittent claudication (IC) most closely relates to which presentation during activity?
Brief, shock-like jerks of a muscle
Pain and weakness in the legs due to inadequate blood flow during exercise
Sudden involuntary muscle contraction with acute pain
Chronic autoimmune weakness of neuromuscular junction
Which term is used for a sudden, involuntary muscle contraction that may be painful but is typically brief?
Spasm
Torticollis
Ataxia
Contracture
Myoclonus is characterized by which feature?
Extreme slowness of movement
Rhythmic, sustained muscle contraction
Rapid, shock-like muscle jerks
Abnormally increased muscle activity
Singultus refers to which common occurrence?
Leg cramps during exertion
Hiccups due to diaphragmatic myoclonus
Sustained neck muscle contraction causing head tilt
Jerky limb movements from basal ganglia injury
Which option best distinguishes a cramp from a spasm?
A cramp is a prolonged, painful involuntary contraction; a spasm is brief and may be less painful
A cramp is always due to electrolyte imbalance; a spasm is always neurologic
A cramp affects smooth muscle; a spasm affects skeletal muscle only
A cramp is non-painful; a spasm is always painful
Torticollis is best described as which condition?
Intermittent leg pain with exertion
Involuntary head tilt caused by neck muscle contractions
Fragmented or jerky motions of the limbs
Permanent shortening of a calf muscle
Bradykinesia, dyskinesia, and hyperkinesia refer to abnormalities of movement. Which pairing is accurate?
Bradykinesia—abnormally increased muscle activity; Dyskinesia—extreme slowness; Hyperkinesia—jerky motions
Bradykinesia—extreme slowness in movement; Dyskinesia—fragmented or jerky motions; Hyperkinesia—abnormally increased muscle function or activity
Bradykinesia—jerky motions; Dyskinesia—slowness; Hyperkinesia—reduced muscle tone
Bradykinesia—lack of tone; Dyskinesia—rapid jerks; Hyperkinesia—coordination loss
Myasthenia gravis is correctly described as which of the following?
Genetic disorder of collagen causing joint laxity
Chronic autoimmune disease affecting the neuromuscular junction
Acute infection of muscle leading to myositis
Vascular disorder causing exertional leg pain
Muscular dystrophy (MD) is a general term referring to more than 30 genetic diseases. Which statement is accurate?
They primarily cause acute muscle inflammation with full recovery
They lead to progressive weakness and degeneration of skeletal muscles; common forms include Duchenne (DMD) and Becker (BMD)
They only affect smooth muscles of the viscera
They are autoimmune conditions of the neuromuscular junction
Which description matches compartment syndrome within repetitive stress disorders?
Inflammation of a tendon’s synovial sheath with painful restriction
Compression of nerves and blood vessels and swelling within a muscle compartment of the arm or leg
Minor tissue injuries healed with rest alone
Trigger points producing referred pain throughout the body
Overuse tendinitis most directly results from which factor?
Excessive or unusual use of a joint causing tendon inflammation
Autoimmune attack on the neuromuscular junction
Acute tear of a tendon due to trauma
Compression of blood vessels within a compartment
Trigger finger is characterized by which pair of findings?
Painful restriction of finger movement and inflammation of a tendon’s synovial sheath
Sudden finger jerks and neuropathic pain
Progressive finger weakness with muscle atrophy
Ischemic pain relieved by rest
Myofascial pain syndrome is best described by which combination?
Acute tendon tear with swelling
Chronic pain disorder affecting muscles and fascia throughout the body and development of trigger points causing local and referred muscle pain
Autoimmune destruction of motor endplates
Isolated joint inflammation due to repetitive stress only
Which statement about rotator cuff injuries is accurate?
Tendinopathy is irritation or degeneration of a tendon at any joint
Impingement syndrome is unrelated to rotator cuff tendinitis
Rotator cuff tears never result from falls or injury
Rotator cuff problems do not occur in swimmers or tennis players
Impingement syndrome is also known as which of the following in common terms?
Golfer’s elbow
Tennis shoulder or swimmer’s shoulder due to rotator cuff tendinitis
Runner’s knee
Trigger finger
Rotator cuff tear most commonly occurs under which circumstance?
When irritated tendons weaken, often following a fall or injury
Due to autoimmune myositis of the shoulder
From acute compartment syndrome of the arm
From chronic hiccups affecting the diaphragm
Which term denotes abnormally increased muscle function or activity, often called hyperactivity?
Hyperkinesia
Hypotonia
Atonic
Bradykinesia
Dyskinesia is best recognized by which characteristic?
Extreme movement slowness
Fragmented or jerky motions
Complete loss of muscle tone
Painful neck tilt
