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WorksheetsTrunk and Abdominal Muscles Quiz
Total questions: 62
Worksheet time: 34mins
Which regions of the trunk contain muscles that assist with movement, stability, and breathing?
Cervical (neck) region and lumbar spine
Cranial region and upper limbs
Thoracic (chest) region and abdominal wall
Pelvic region and lower limbs
Which of the following is NOT a function of the trunk muscles?
Assisting in breathing
Twisting and bending movements
Producing hormones
Providing stability and posture
Explain how the muscles of the thoracic and abdominal regions contribute to both movement and stability in the human body.
They are responsible for hormone production and digestion.
They allow twisting, bending, and flexion while maintaining posture.
They only stabilize the body and do not assist in movement.
They only help with breathing and do not affect movement.
Which abdominal muscle is commonly referred to as the "six-pack" muscle?
Transversus abdominis
External oblique
Rectus abdominis
Internal oblique
Which abdominal muscle forms the deepest layer of the anterolateral wall?
Transversus abdominis
Rectus abdominis
Internal oblique
External oblique
Which muscle is located just beneath the external oblique in the abdominal wall?
External oblique
Rectus abdominis
Transversus abdominis
Internal oblique
If a person is targeting their superficial side muscles during a workout, which abdominal muscle group are they focusing on?
External oblique
Rectus abdominis
Internal oblique
Transversus abdominis
What action is performed by the bilateral contraction of the Rectus Abdominis muscle? Think about a crunching motion.
Abducts the trunk
Flexes the trunk (bringing rib cage toward pelvis)
Extends the trunk
Rotates the trunk
Which muscle lies deep to the external oblique and superficial to the transversus abdominis?
Pectoralis major
Rectus abdominis
Latissimus dorsi
Internal oblique
Explain how the internal oblique muscle contributes to forced expiration.
By compressing abdominal contents, increasing intra-abdominal pressure
By flexing the hip joint
By relaxing the diaphragm
By expanding the rib cage
Which muscle is described as the deepest of the flat muscle group in the abdomen?
Internal oblique
Transversus abdominis
Rectus abdominis
External oblique
How does the transversus abdominis assist with respiration?
It inhibits breathing
It assists with forced expiration
It assists with forced inspiration
It only functions during rest
Which muscle is the largest and most superficial muscle of the chest wall?
Latissimus Dorsi
Trapezius
Deltoid
Pectoralis Major
What is the shape of the pectoralis major muscle?
Triangular
Fan-shaped
Circular
Rectangular
Which muscle lies deep (beneath) the pectoralis major, closer to the ribs and scapula?
Pectoralis Minor
Trapezius
Deltoid
Latissimus Dorsi
Which muscle is described as a fan-shaped muscle lying along the lateral thoracic wall, deep to the pectoral muscles and extending toward the scapula?
Trapezius
Biceps Brachii
Deltoid
Serratus Anterior
Which muscle is positioned under the clavicle, between the clavicle and the first rib?
Subclavius
Trapezius
Pectoralis major
Deltoid
Which muscles lie between the ribs and play a role in respiration and maintaining thoracic cage integrity?
Abdominal muscles
Gluteal muscles
Deltoid muscles
Intercostal muscles
What direction do the fibers of the internal intercostal muscles run?
Downward and backward
Horizontally
Circularly around the ribs
Upward and forward
Where is the transversus thoracis muscle located?
On the back, near the spine
On the inner surface of the anterior thoracic wall
On the outer surface of the abdominal wall
On the surface of the diaphragm
During which type of breathing are the transversus thoracis muscles typically more active?
Sleep breathing
Forced breathing (e.g. heavy exercise, coughing)
Quiet breathing
Shallow breathing
What is the definition of the origin of a muscle?
The site where the muscle ends, usually on the more movable bone.
The site where a muscle begins (its attachment), usually the more fixed, less movable end when the muscle contracts.
The location where nerves attach to muscles.
The point where two bones meet.
Which of the following best describes the insertion of a muscle?
The fixed point of muscle attachment.
The site where the muscle ends, usually on the more movable bone, and moves toward the origin when the muscle contracts.
The site where a muscle begins, typically proximal to the center of the body.
The location where blood vessels enter the muscle.
According to the definitions, which statement is true about the typical location of the origin compared to the insertion?
The origin and insertion are always at the same location.
The origin is typically distal compared to the insertion.
The origin is typically proximal (closer to the center of the body) compared to the insertion.
The origin is always on the more movable bone.
When a muscle contracts, what happens to the insertion?
The insertion moves toward the origin.
The insertion remains stationary.
The insertion becomes the origin.
The insertion moves away from the origin.
Why is the insertion typically described as distal compared to the origin?
Because it is farther from the center of the body in many cases.
Because it is closer to the center of the body.
Because it is always on the fixed bone.
Because it never moves during muscle contraction.
Which of the following best describes the "action" of a muscle?
The blood supply to the muscle
The location of the muscle in the body
The movements a muscle produces when it contracts, such as flexion or rotation
The nerve that supplies the muscle
Why is innervation important for muscle action?
It helps muscles grow faster
It supplies oxygen to the muscle
Nerve injury can impair muscle action
It determines the size of the muscle
Which of the following is NOT typically included in the definition of muscle action?
Supplying blood to the muscle
Stabilizing or resisting motion
Abduction
Flexion
Which plane divides the body into left and right halves and involves forward and backward movements?
Frontal (Coronal) Plane
Oblique Plane
Transverse (Horizontal) Plane
Sagittal Plane
Movements that are side-to-side occur in which anatomical plane?
Median Plane
Transverse (Horizontal) Plane
Frontal (Coronal) Plane
Sagittal Plane
The Transverse (Horizontal) Plane divides the body into which of the following parts?
Left and right halves
Front and back halves
Upper (superior) and lower (inferior) parts
Diagonal sections
If a movement involves twisting or rotation, in which plane does it primarily occur?
Sagittal Plane
Transverse (Horizontal) Plane
Vertical Plane
Frontal (Coronal) Plane
Which of the following best describes flexion?
Decreasing the angle between bones or parts
Increasing the angle between bones or parts
Moving a limb away from the midline of the body
Movement around a longitudinal axis
What is the correct definition of abduction?
Moving a limb away from the midline of the body
Moving a limb toward the midline
Increasing the angle between bones
Movement around a longitudinal axis
Which movement term refers to increasing the angle between bones or parts?
Rotation
Extension
Abduction
Flexion
What is the main difference between abduction and adduction?
Abduction is a type of rotation, adduction is not
Abduction occurs only at the hip, adduction only at the shoulder
Abduction moves a limb away from the midline, adduction moves it toward the midline
Abduction increases the angle, adduction decreases it
Which of the following is an example of rotation?
Straightening the elbow
Bending the knee
Moving the arm away from the body
Turning the head from side to side
Which bone is known as the longest and strongest bone in the human body?
Fibula
Tibia
Pelvis
Femur
What is the main function of the tibia in the lower leg?
Main weight-bearing bone
Bears less weight
Supports the hip joint
Provides muscle attachment and stability
Which of the following bones is more lateral and bears less weight in the lower leg?
Femur
Pelvis
Tibia
Fibula
The pelvis is composed of which three bones on each side?
Ilium, ischium, pubis
Radius, ulna, humerus
Femur, tibia, fibula
Scapula, clavicle, sternum
Which of the following are the three main fascial (or osseofascial) compartments of the lower leg?
Anterior compartment
Lateral compartment
Posterior compartment
Medial compartment
Which of the following are the three main compartments of the lower leg?
Superior, inferior, and medial
Anterior, lateral, and posterior
Proximal, distal, and central
Superficial, deep, and medial
Which muscle is NOT part of the anterior compartment of the lower leg?
Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Gastrocnemius
What is the primary function of the anterior compartment muscles of the lower leg?
Plantarflexion of the foot at the ankle
Abduction of the thigh
Flexion of the knee
Dorsiflexion of the foot at the ankle and extension of toes
Sometimes the posterior compartment of the lower leg is further subdivided. What are the names of these subdivisions?
Proximal and distal
Superficial posterior and deep posterior
Superior and inferior
Medial and lateral
Which muscles are found in the lateral compartment of the leg?
Flexor digitorum longus, popliteus
Fibularis longus, fibularis brevis
Tibialis posterior, flexor hallucis longus
Gastrocnemius, soleus, plantaris
What is the primary function of the muscles in the lateral compartment of the leg?
Inversion of the foot
Eversion of the foot, assists plantarflexion
Extension of the knee
Flexion of the toes
Which muscles are included in the superficial posterior compartment of the leg?
Gastrocnemius, soleus, plantaris
Flexor digitorum longus, popliteus
Fibularis longus, fibularis brevis
Tibialis posterior, flexor hallucis longus
Which of the following is NOT a function of the posterior compartment muscles?
Which of the following is a primary function of the tibialis anterior muscle?
Flexion of the knee
Extension of the hip
Dorsiflexion of the ankle
Plantarflexion of the ankle
What is the primary function of the Extensor Hallucis Longus (EHL) muscle?
Plantarflexion of the foot
Extension of the big toe and dorsiflexion of the foot at the ankle
Flexion of the big toe
Abduction of the little toe
What is the primary function of the Extensor Digitorum Longus (EDL)?
Extension of the lateral four toes
Flexion of the lateral four toes
Abduction of the big toe
Plantarflexion of the foot at the ankle
Which of the following is a primary function of the fibularis longus muscle?
Flexion of the knee
Eversion of the foot
Abduction of the arm
Extension of the hip
What is the primary action of the fibularis brevis muscle?
Dorsiflexion of the foot
Eversion of the foot; assists plantarflexion
Extension of the hip
Flexion of the knee
What is the primary action of the gastrocnemius muscle at the ankle joint?
Plantar flexes the foot
Abducts the foot
Dorsiflexes the foot
Extends the toes
What is the primary function of the soleus muscle?
Abducting the thigh
Flexing the knee
Extending the hip
Plantar flexion, especially when the knee is flexed, and maintaining posture by counteracting gravity
Which muscle is located deep to the gastrocnemius?
Tibialis anterior
Soleus
Peroneus longus
Rectus femoris
What is the primary action of the tibialis posterior muscle at the ankle?
Dorsiflexion
Plantar flexion
Extension of the knee
Flexion of the hip
What is the primary function of the Flexor Digitorum Longus (FDL) muscle?
Flexes the lateral four toes and assists with plantarflexion and inversion
Extends the big toe and assists with dorsiflexion
Flexes the knee and assists with hip extension
Abducts the toes and assists with eversion
A patient is unable to "unlock" their knee from a fully extended position. Which muscle is most likely impaired?
Popliteus
Gastrocnemius
Quadriceps femoris
Sartorius
