Mader's Understanding Human Anatomy & Physiology (Longenbaker), 8th Edition

Chapter 7: The Muscular System

Multiple Choice Quiz

1
What type of muscle is found in the walls of hollow internal organs?
A)skeletal
B)smooth
C)cardiac
2
What type of muscle is striated AND under voluntary control?
A)skeletal
B)smooth
C)cardiac
3
What type of muscle is striated, branched, and has intercalated disks?
A)skeletal
B)smooth
C)cardiac
4
Which of the following IS a function of the muscular system?
A)movement
B)joint stabilization
C)heat production
D)All are functions of the muscular system.
5
The connective tissue layer that encircles a fascicle is called the
A)endomysium
B)epimysium
C)perimysium
6
Place the layers of connective tissue associated with skeletal muscle in order from deepest to most superficial.
A)endomysium, epimysium and perimysium
B)endomysium, perimysium and epimysium
C)perimysium, epimysium and endomysium
D)epimysium perimysium and endomysium
7
A bundle of muscle fibers is a(n):
A)endomysium
B)fascicle
C)muscle organ
D)perimysium
8
Extensions of the sarcolemma that go deep into the muscle fiber are the
A)T-tubules.
B)sarcoplasmic reticulum.
C)myofibrils.
D)sarcomeres.
9
Where are the calcium ions stored in a muscle fiber?
A)T-tubules
B)sarcolemma
C)sarcoplasmic reticulum
D)mitochondria
10
A red pigment that stores oxygen for muscle use is
A)hemoglobin.
B)erythrocyte.
C)sarcoplasm.
D)myoglobin.
11
The thick filaments of a sarcomere are made up of
A)actin.
B)myosin.
C)myoglobin.
D)tropomyosin.
12
The thin filaments of a sarcomere are made up of
A)only actin
B)only myosin
C)actin and myosin
D)actin, troponin and tropomyosin
13
The dark region of a sarcomere is called the
A)H-zone.
B)Z-line.
C)A band.
D)I band.
14
Which of the following events that lead to muscle fiber contraction occurs first?
A)Impulses travel down the T-tubules.
B)Calcium ions are released into the sarcoplasm.
C)Actin filaments slide past myosin filaments.
D)ATP is hydrolyzed.
15
Which myofilament has cross-bridges?
A)troponin
B)actin
C)myosin.
D)tropomyosin
16
What is the role of calcium ions in the sliding filament theory of contraction?
A)Binds to the myocin cross-bridges to activate them.
B)Binds to troponin to move the tropomyosin away from actin's active sites.
C)Binds to ATP to hydrolzye it.
D)All of the above.
17
The release of ADP and P from the myosin head causes the
A)myosin cross-bridges to bend.
B)pulling of the thin filaments toward the middle of the sarcomere.
C)power-stroke.
D)All of the above.
18
What must occur for a contraction to cease and the muscle fiber relax?
A)The nerve impulse stops.
B)Calcium ions are pumped back into the SR.
C)ATP releases myosin from the actin.
D)All of the above must occur.
19
ATP is first regenerated by
A)cellular respiration.
B)lactic acid breakdown.
C)creatine phosphate breakdown.
D)fermentation.
20
Muscle fatigue occurs
A)when muscle fibers run out of ATP.
B)at the beginning of the latent period.
C)at the beginning of the relaxation period.
D)when lactic acid is completely broken down.
21
Why do we breathe deeply following strenuous exercise, even while resting?
A)fatigue
B)oxygen debt
C)lactic acid accumulation
D)B and C, but not A
22
The latent period, the contraction period, and the relaxation period are the three stages of a:
A)muscle twitch
B)myogram
C)summation
D)motor unit
23
In a muscle twitch, the time period from stimulation until the start of the contraction is the ______ period.
A)contraction
B)relaxation
C)fatigue
D)latent
24
Recruitment results in
A)atrophy.
B)stronger and stronger muscle contractions.
C)all-or-none.
D)fatigue.
25
Increase in muscle size due to training is called
A)atrophy.
B)fatigue.
C)hypertrophy.
D)hyperplasia.
26
Which fatigue more quickly, slow twitch fibers or fast twitch fibers?
A)slow
B)fast
C)fatigue at same rate
D)they do not fatigue
27
Which type of muscle fiber has more dependence on anaerobic energy?
A)slow twitch
B)fast twitch
28
Which type of muscle fiber would be most helpful in weight-lifting?
A)slow twitch
B)fast twitch
29
Muscles that work opposite one another are called
A)antagonists
B)agonists
C)synergists
D)prime movers
30
The tibialis anterior is named according to
A)size
B)shape
C)direction of fibers
D)location
31
The gluteus maximus is named according to
A)size.
B)shape.
C)action.
D)both size and location.
32
The flexor carpi ulnaris will
A)flex the ulna.
B)flex the wrist on the ulna side.
C)extend the wrist on the ulna side.
D)extend the ulna.
33
The muscle attachment on the body part that moves is the
A)origin.
B)insertion.
34
Identify the muscle that wrinkles the eyebrows and wrinkles the brow.
A)Buccinator
B)Frontalis
C)Orbicularis Oculi
D)Zygomaticus
35
Identify a muscle that promotes smiling.
A)Buccinator
B)Frontalis
C)Orbicularis Oris
D)Zygomaticus
36
The depressor anguli oris and the depressor labii inferioris are both muscles that function in:
A)chewing
B)compression of the cheeks
C)frowning and pouting
D)smiling
37
Identify muscles of mastication.
A)Buccinator and temporalis
B)Masseter and temporalis
C)Masseter and orbicularis oris
D)Masseter and zygomaticus
38
Identify the function of the sternocleidomastoid muscle.
A)Abducts the arm
B)Breathing
C)Shrugs the shoulders
D)Turns the head side to side
39
Identify the muscle that adducts the scapula and aids in extension of the head.
A)Buccinator
B)Serratus anterior
C)Sternocleidomastoid
D)Trapezius
40
The external intercostal muscles function in _______ and the internal intercostal muscles function in ______.
A)expiration: inspiration
B)inspiration: expiration
C)flexing the trunk: extending the trunk
D)extending the truck: flexing the trunk
41
The primary muscle of breathing is the:
A)diaphragm
B)external intercostal
C)internal intercostal
D)rectus abdominis
42
Identify a muscle that flexes the vertebral column.
A)Rectus abdominis
B)Serratus anterior
C)Sternocleidomastoid
D)Trapezius
43
Identify the muscle that abducts the arm horizontally.
A)Biceps brachii
B)Deltoid
C)Trapezius
D)Triceps brachii
44
Identify the muscle that pulls the arm towards the chest.
A)Biceps brachii
B)Latissimus dorsi
C)Pectorialis major
D)Triceps brachii
45
Identify the lower back muscle brings the arm down from a raised position.
A)Latissimus dorsi
B)Pectoralis major
C)Serratus anterior
D)Trapezius
46
Involuntary muscular contractions are
A)cramps.
B)spasms.
C)strains.
D)sprains.
47
Identify the muscles that form the rotator cuff.
A)Infraspinatus, supraspinatus, teres minor and subscapularis
B)Intraspinatus, supraspinatus, teres minor and teres major
C)Supraspinatus, subscapularis, teres major and teres minor.
D)Deltoid, supraspinatus, infraspinatus and teres major
48
The bicpes brachii ______ the arm and forearm and the triceps brachii _____ the arm and the forearm.
A)abducts: adducts
B)adducts: abducts
C)extends: flexes
D)flexes: extends
49
The iliopsoas ______ the thigh and the gluteus maximus ______ the thigh.
A)abducts: adducts
B)adducts: abducts
C)extends: flexes
D)flexes: extends
50
Identify the function of the muscles on the medial region of the thigh.
A)Abduct the thigh.
B)Adduct the thigh
C)Extend the leg
D)Flex the leg
51
Identify the group of muscles on the anterior thigh.
A)Abductor group
B)Adductor group
C)Hamstring group
D)Quadriceps group
52
The quadriceps are located on the:
A)anterior abdomen
B)anterior thigh
C)posterior thigh
D)posterior arm
53
The quadriceps group ______ the thigh and the hamstring group _____ the thigh.
A)abducts: adducts
B)adducts: abducts
C)extends: flexes
D)flexes: extends
54
Which of the following muscles is NOT part of the hamstring group?
A)Biceps brachii
B)Rectus femoris
C)Semimembranosus
D)Semitendinosus
55
The muscle of the posterior leg that forms a large portion of the calf is the:
A)gastrocnemius
B)semitendinosus
C)tibialis anterior
D)vastus lateralis
56
A stretching or tearing of a muscle is a
A)cramp.
B)spasm.
C)strain.
D)sprain.
57
Chronic pain characterized by achy pains, tenderness, stiffness of muscles, and substance P found in the blood stream describes the condition called
A)cancer
B)diabetes
C)fibromyalgia
D)tetanus
58
A group of disorders characterized by progressive degeneration and weakening of muscles is
A)a sprain.
B)fibromyalgia.
C)tendonitis.
D)muscular dystrophy.
59
This autoimmune disease of muscle weakness is caused by destruction of acetylcholine receptors.
A)myasthenia gravis
B)amyotrophic lateral sclerosis
C)fibromyalgia
D)Lou Gehrig's disease
Maders Understanding Human Anatomy & Physiology
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