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WorksheetsMuscular System - Chapter Assessment
Total questions: 77
Worksheet time: 39mins
Which of the following types of muscle are found in the stomach or blood vessels?
Cardiac
Skeletal
Visceral
Striated
A large broad sheet of connective tissue, such as on the abdomen, is called a/an _____ .
Aponeurosis
Epimysium
Perimysium
Endomysium
The membrane that is the closest to the individual muscle fiber is the _____ .
Aponeurosis
Epimysium
Perimysium
Endomysium
A group of skeletal muscle fibers is called a/an _____.
Perimysium
Fascicle
Epimysium
Tendon
The structure that connects muscles to bones is the _____.
Aponeurosis
Fascicle
Tendon
Ligament
The fibers of a muscle that are connected to the overlying skin fibers is the _____ .
Subcutaneous fascia
Deep fascia
Subserous fascia
Tendon
The muscle cells within a group such as the biceps brachii are individually called _____ .
Sarcolemmas
Fibers
Myocyte
Myofibrils
The fiber cell membrane is termed the _____ .
Myofibril
Myosin
Myofilament
Sarcolemma
Which of the following does not belong with the others?
Myofilament
Myosin
Myofibril
Actin
The smallest, functional unit of contraction is the _____.
Fiber
Sarcomere
Filament
Myofibril
The I bands in a sarcomere are made of _____ .
Myosin
Actin and myosin
Tropomyosin
Actin
The _____ zone contains only myosin and is in the center of a sarcomere.
A
I
M
H
The cisternae are enlarged portions of the _____ .
Sarcoplasmic reticulum
Endoplasmic reticulum
Transverse tubules
T-tubules
The gap between the muscle and a nerve is the _____.
Synapse
Motor end plate
Myoneural junction
Motor neuron
The chemical that crosses a neuromuscular gap is _____.
Sodium
A protein
A neurotransmitter
Calcium
The combination of a neuron and the muscle fiber it associates with is called a/an _____ .
Fascicle
Motor end plate
Motor unit
Myoneural junction
The most abundant of the muscle proteins is _____ .
Actin
Troponin
Myosin
Tropomyosin
The main force of contraction occurs when actin forms a chemical complex with _____ .
Troponin
Myosin
Tropomyosin
Acetylcholine
When a muscle is at rest, which of the following is not associated chemically with the others?
Actin
Myosin
Troponin
Tropomyosin
During the contraction of a sarcomere, calcium ions bind with the protein _____.
Actin
Myosin
Troponin
Tropomyosin
The main neurotransmitter involved in skeletal muscle contraction is _____.
Adrenaline
Noradrenaline
Acetylcholine
Dopamine
Which molecule directly supplies energy to myosin to allow the filaments to contract?
Adenosine diphosphate (ADP)
ATP
Creatine phosphate
Creatinine
What is the most abundant storage form of energy within a muscle fiber?
Glycogen
ADP
ATP
Creatine phosphate
What effect does creatine phosphokinase have an muscle activity?
It causes a fiber to relax
It stimulates ATP synthesis
Catalyzes the formation of creatine phosphate
Causes the breakdown of creatine into creatinine
How is excess sugar stored within muscle fibers?
in ATP
Glycogen
Glucose
Creatinine
Which main factor allows muscle to sustain contraction even during times when the blood supply is low?
The presence of hemoglobin
Glycogen storage
Myoglobin
Citric acid cycle
The reddish brown color of muscle is due to the presence of _____ molecules.
Creatine phosphate
Hemoglobin
Iron
Myoglobin
Which molecule is produced during exercise, resulting in the oxygen debt?
Glycogen
Lactate
Pyruvate
ATP
Which of the following does not belong with the others?
White muscles
Fast-contracting
Extensive sarcoplasmic reticulum
Relatively large supply of myoglobin
About _____% of ATP energy becomes liberated as heat from muscle metabolism.
25
50
75
10
The minimum stimulus needed to cause a contraction is called the _____.
All-or-none law
Threshold
Sub-maximal stimulus
Recruitment level
A single contraction of a muscle is called a ______.
Threshold
Recruitment
Twitch
Myogram
The period of time between the stimulus and contraction is called the _____.
Latent period
Refractory period
Contraction period
Relaxation period
The complete contraction of a muscle, without the ability to relax, is called _____.
A sustained contraction
Fatigue
Tetanic contraction
Treppe
The constant contraction of a percentage of fibers within a muscle is referred to as _____.
Tetany
Tonus
Sustained contraction
Summation
Contractions called _____ occur whenever the forces applied to a muscle are increased, but the muscle does not appear to be moving.
Isotonic
Isometric
Tetanic
Summation contractions
Which of the following muscles always requires nerve impulses in order to contract?
Multi-unit smooth
Skeletal
Visceral smooth
Cardiac
Which type of muscle is found in the wall of blood vessels?
Skeletal
Cardiac
Smooth visceral
Multi-unit smooth
Since smooth muscle fibers have rhythmicity and can stimulate each other, they contract in a pattern called _____.
A functional syncytium
Peristalsis
Tetany
Tonus
The degeneration of muscle fibers caused by a lack of proper stimulation and usage is called _____.
Hypertrophy
Atrophy
Dystrophy
Peristalsis
In smooth muscle, calcium ions combine with _____ to allow the actin and myosin cross-bridges to form.
Calmodulin
Troponin
Myosin
Tropomyosin
The following cause smooth muscles to contract except which one?
Acetylcholine
Troponin
Norepinephrine
Oxytocin
The presence of _____ allow cardiac muscle fibers to transmit impulses faster among themselves.
Cell membranes
Nerve fibers
Intercalated disks
Peristalsis
The muscle is called the _____ when it is causing the movement that is being described.
Antagonist
Synergist
Prime mover
Flexor
Muscles that act together to cause the same movements are called _____.
Synergists
Antagonists
Prime movers
Agonists
The sternocleidomastoid muscle was named because of its _____.
Shape
Size
Location
Points of attachment
The _____ muscle forms a broad flat sheet on top of the head.
Temporalis
Buccinator
Epicranius
Frontalis
Which muscle lines most of the inner cheek wall?
Orbicularis oris
Buccinator
Orbicularis oculi
Masseter
Which muscle causes smiling and is attached to the corners of the lips?
Zygomatic
Buccinator
Temporalis
Orbicularis oris
The _____ is the broad flat muscle on the neck, which causes frowning.
Sternocleidomastoid
Platysma
Buccinator
Pterygoid
A condition called temporomandibular syndrome can be caused by contraction of the _____.
Buccinator
Masseter
Platysma
Frontalis
The following muscles belong together except which one?
Masseter
Pterygoid
Temporalis
Digastric
The antagonist of the sternocleidomastoid is the _____.
Splenius capitis
Digastric
Trapezius
Semispinalis capitis
The triangular shaped muscle on the back that rotates the shoulder is the _____
Trapezius
Rhomboid
Deltoid
Levator scapulae
The _____ muscle acts to elevate the shoulders.
Rhomboideus
Levator scapulae
Pectoralis major
Deltoid
Adduction of the scapulae in a posterior view is mainly accomplished by the _____.
Trapezius
Rhomboideus
Serratus anterior
Pectoralis minor
The _____ will move the shoulders on a forward plane.
Pectoralis major
Pectoralis minor
Deltoid
Serratus anterior
An antagonist of the teres major is the _____.
Pectoralis major
Supraspinatus
Infraspinatus
Subscapularis
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Pectoralis major
Deltoid
Trapezius
Coracobrachialis
Which triangular thoracic muscle causes the arms to move towards the midline?
Subscapularis
Teres minor
Pectoralis major
Latissimus dorsi
A synergist with the biceps brachii is the _____.
Triceps brachii
Brachialis
Deltoid
Supinator
The pronator teres inserts on the _____.
Radius
Ulna
Humerus
Scapula
The following belong together except which one?
Flexor carpi radialis
Palmaris longus
Flexor digitorium profundus
Extensor carpi ulnaris
Which of the following does not belong with the rest?
External oblique
Transversus abdominis
Internal oblique
Rectus abdominus
The following can be grouped together except which one?
Coccygeus
Sphincter urethrae
Bulbospongiosus
Ischiocavernosus
The psoas major is the antagonist to the _____.
Psoas minor
Gluteus maximus
Iliacus
Pectineus
The _____ muscle attaches to a long band of tendon which runs down the lateral aspect of the leg.
Iliacus
Tensor fasciae latae
Adductor longus
Gracilis
The _____ muscle causes one to cross the leg by adducting the thigh and flexing the lower leg.
Iliopsoas
Sartorius
Gracilis
Adductor magnus
Which muscle runs from the anterior superior iliac spine to the medial tibial surface near the patella?
Vastus medialis
Vastus lateralis
Semitendinosus
Sartorius
Which of the following does not belong with the others?
Semimembranosus
Biceps femoris
Sartorius
Semitendinosus
Which of these does not belong with the others?
Vastus inermedius
Rectus femoris
Vastus medialis
Biceps femoris
The following cause dorsiflexion of the foot except which one?
Extensor digitorum longus
Soleus
Tibialis anterior
Peroneus tertius
Which of the following is attached to the calcaneus?
Gastrocnemius
Tibialis posterior
Peroneus longus
Peroneus tertius
The _____ is inserted on the base of the first metatarsal.
Soleus
Tibialis anterior
Tibialis posterior
Extensor digitorum longus
Spontaneous contraction of random groups of muscles is called _____.
Syncytium
Peristalsis
Fibrillation
Contracture
A disease which results in muscle weakness because of abnormal neuromuscular junction activity is _____.
Poliomyelitis
Myasthenia gravis
Multiple sclerosis
Muscular dystrophy
Which of the following refers to a prolonged muscular spasm?
Myotonia
Paresis
Myalgia
Contracture
