McGraw-Hill OnlineMcGraw-Hill Higher EducationLearning Center
Student Center | Instructor Center | Information Center | Home
Essential Study Partner
Animation Activities
GetBodySmart
Online Tutor
Human Body Case Studies
Course Tools
Spanish A&P Glossary
Laboratory Exercises
Links Library
A & P Arcade
Study Skills
Career Information
Martin Lab Manual, WebQuest
Chapter Quiz
Essay Questions
Labeling Exercises
Flashcards
Crossword Puzzles
Concentration Game
Clinical Case Study
Study Outline
Links Library
Feedback
Help Center


Hole's Essentials of Human Anatomy & Physiology, 8/e
David N. Shier, Washtenaw Community College
Jackie L. Butler, Grayson County College
Ricki Lewis, SUNY - Albany

Muscular System

Chapter Quiz



1

A fibrous, flattened, sheet-like tendon is known as
A)fascia
B)aponeurosis
C)a tendon sheath
D)a broad ligament
2

The connective tissue that surrounds individual muscle fibers is
A)perimysium
B)epimysium
C)endomysium
D)elastin
3

Skeletal muscle cells contain many
A)nuclei
B)mitochondria
C)both
D)neither
4

The dark bands in skeletal muscle fibers that contribute to its striated appearance are known as
A)A bands
B)Z bands
C)H bands
D)I bands
5

The segment of a muscle fiber that contains actin and myosin is the
A)A band
B)Z lines
C)H zone
D)sarcomere
6

The sarcomere, the basic unit of skeletal muscle extends from
A)A band to A band
B)M line to M line
C)H band to H band
D)Z line to Z line
7

Which of the following is not characteristic of the motor end plate of a muscle fiber?
A)many nuclei
B)synaptic vesicles
C)abundant mitochondria
D)extensive folding of the sarcolemma
8

When the cross bridge of the myosin molecule forms linkages with actin filaments, the result is
A)shortening of the muscle fiber
B)creation of a high energy bond
C)membrane polarization
D)release of acetylcholine
9

ATPase is stored in
A)the actin filament helix
B)the globular portion of the myosin filament
C)myosin cross bridges
D)muscle cell cytoplasm
10

When a nerve impulse reaches the end of a motor neuron,
A)the number of synaptic vesicles increase
B)muscle fibers stretch
C)calcium ions move out of the cytoplasm of the neuron
D)acetylcholine is released
11

The toxin of clostridium botulinum causes death by
A)decreasing the permeability of the sarcolemma to calcium
B)increasing the release of acetylcholinesterase
C)halting the formation of new synaptic vesicles
D)preventing the release of acetylcholine
12

Muscle fibers undergoing sustained, strenuous exercise depend upon
A)aerobic respiration
B)increased metabolism of glucose
C)anaerobic respiration
D)increased blood supply
13

Oxygen debt secondary to strenuous exercise is due to
A)insufficient oxygen to promote conversion of lactic acid to pyruvic acid
B)lack of available oxygen to convert ADP to ATP
C)both
D)neither
14

The strength of a muscle in response to different levels of stimulation is determined by the
A)level of stimulation delivered to individual muscle fibers
B)number of fibers that respond in each motor unit
C)number of motor units receiving a threshold stimulus
D)characteristics of each muscle group
15

The result of summation and recruitment together is
A)hypotonic contraction
B)sustained tetanic contraction
C)muscle tone
D)muscle hypertrophy
16

Muscle tone refers to
A)a state of sustained, partial contraction of muscles that is necessary to maintain posture
B)a feeling of well-being following exercise
C)the ability of a muscle to maintain contraction against an outside force
D)the condition athletes attain after intensive training
17

Rhythmicity is a property of
A)multiunit smooth muscle
B)skeletal muscle
C)both
D)neither
18

Peristalsis is due to which of the following characteristics of smooth muscle?
A)excitability
B)automaticity
C)rhythmicity
D)autonomic innervation
19

The rapidity with which an impulse spreads in cardiac muscle is due to
A)increased amounts of neurotransmitters
B)the presence of striated muscle fibers
C)intercalated disks between muscle fibers
D)the property of excitability
20

Muscles that assist the prime mover in producing a movement are called
A)assistants
B)synergists
C)potentiators
D)agonists
21

Antagonistic muscles
A)are always located on the opposite side of the body from the prime mover
B)have different speeds and strengths of contraction
C)produce extension rather than abduction
D)perform functions opposite to those performed by the prime mover
22

Muscles that are involved in chewing are attached to the
A)maxilla
B)mandibular process of the temporal bone
C)zygomatic bone
D)mandible
23

The muscle that compresses the cheeks inward when it contracts is the
A)orbicularis oris
B)epicranius
C)platysma
D)buccinator
24

The muscles that flex, extend, and rotate the head include all of the following except
A)pectoralis minor
B)sternocleidomastoid
C)splenius capitis
D)semisplinalis capitis
25

The insertion of the sternocleidomastoid is the
A)anterior surface of the sternum
B)mastoid process of the temporal bone
C)occipital bone
D)spinous processes of the lower cervical vertebrae
26

The primary extensors of the upper arm are the
A)coracobrachialis and pectoralis major
B)teres major and latissimus dorsi
C)supraspinatus and deltoid
D)subscapularis and infraspinatus
27

The muscle that abducts the upper arm and can both flex and extend the humerus is the
A)biceps brachii
B)deltoid
C)infraspinatus
D)triceps brachii
28

Which of the following muscles produce plantar flexion?
A)gastrocnemius
B)peroneus tertius
C)tibialis anterior
D)extensor digitorum longus
29

Skeletal muscle is composed of skeletal muscle tissue, nervous tissue, blood, and connective tissue.
A)True
B)False
30

Layers of connective tissue that extend into muscle and form compartments within the muscle are fascicles.
A)True
B)False
31

Skeletal muscle is composed of multiple layers surrounded by connective tissue.
A)True
B)False
32

A skeletal muscle fiber is an individual cell that contracts and shortens when stimulated.
A)True
B)False
33

The sarcoplasmic reticulum is composed of invaginations of the muscle cell membrane that contain extracellular fluid.
A)True
B)False
34

The severity of muscle strain depends on the number of muscle fibers that are damaged.
A)True
B)False
35

A motor neuron connects to a single muscle fiber.
A)True
B)False
36

During muscle contraction, the head of myosin cross bridges attaches to actin binding sites and bends slightly pulling the actin filament toward the center of the sarcomere.
A)True
B)False
37

An influx of potassium ions into the muscle fiber is responsible for cross linking of actin and myosin filaments.
A)True
B)False
38

The energy source for conversion of ADP to ATP in an actively contracting muscle is creatine phosphate.
A)True
B)False
39

Oxygen is stored in muscle tissue in molecules of hemoglobin in the cytoplasm of muscle cells located near mitochondria.
A)True
B)False
40

Muscle fatigue is the inability to contract after a period of sustained, strenuous exercise.
A)True
B)False
41

Much of the heat of the body is produced by the metabolic activities of viscera.
A)True
B)False