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CH.9

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Muscles
Ashley Garrett
Quiz by Ashley Garrett, updated more than 1 year ago
Ashley Garrett
Created by Ashley Garrett about 10 years ago
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Resource summary

Question 1

Question
A large broad sheet of connective tissue, such as on the abdomen, is called a/an _____ .
Answer
  • aponeurosis
  • epimysium
  • perimysium
  • endomysium

Question 2

Question
The membrane that is the closest to the individual muscle fiber is the _____.
Answer
  • aponeurosis
  • epimysium
  • perimysium
  • endomysium

Question 3

Question
A group of skeletal muscle fibers is called a/an _____.
Answer
  • perimysium
  • fascicle
  • epimysium
  • tendon

Question 4

Question
The structure that connects muscles to bones is the _____.
Answer
  • aponeurosis
  • fascicle
  • tendon
  • ligament

Question 5

Question
The main force of contraction occurs when actin forms a chemical complex with _____ .
Answer
  • troponin
  • myosin
  • tropomyosin
  • acetylcholine

Question 6

Question
When a muscle is at rest, which of the following is not associated chemically with the others?
Answer
  • actin
  • myosin
  • troponin
  • tropomyosin

Question 7

Question
During the contraction of a sarcomere, calcium ions bind with the protein _____.
Answer
  • actin
  • myosin
  • troponin
  • tropomyosin

Question 8

Question
The main neurotransmitter involved in skeletal muscle contraction is _____.
Answer
  • adrenalin
  • noradrenalin
  • acetylcholine
  • dopamine

Question 9

Question
Which molecule directly supplies energy to myosin to allow the filaments to contract?
Answer
  • adenosine diphosphate
  • ATP
  • creatone phosphate
  • creatinine

Question 10

Question
The presence of _____ allow cardiac muscle fibers to transmit impulses faster among themselves.
Answer
  • cell membranes
  • nerve fibers
  • intercalated disks
  • peristalsis

Question 11

Question
The muscle is called the _____ when it is causing the movement that is being described.
Answer
  • antagonist
  • synergist
  • prime mover
  • flexor

Question 12

Question
Muscles that act together to cause the same movements are called _____.
Answer
  • synergists
  • antagonists
  • prime movers
  • agonists

Question 13

Question
The sternocleidomastoid muscle was named because of its _____.
Answer
  • shape
  • size
  • location
  • points of attachment

Question 14

Question
The _____ muscle forms a broad flat sheet on top of the head.
Answer
  • temporalis
  • buccinator
  • epicranius
  • frontalis

Question 15

Question
Which muscle lines most of the inner cheek wall?
Answer
  • orbicularis oris
  • buccinator
  • orbicularis oculi
  • masseter

Question 16

Question
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Answer
  • pectorals major
  • deltoid
  • trapezius
  • coracobrachialis

Question 17

Question
Which triangular thoracic muscle causes the arms to move towards the midline?
Answer
  • subscapularis
  • teres minor
  • pectoralis major
  • latissimus dorsi

Question 18

Question
A synergist with the biceps brachii is the _____.
Answer
  • triceps brachii
  • brachialis
  • deltoid
  • supinator

Question 19

Question
The pronator teres inserts on the _____.
Answer
  • humerus
  • scapula
  • ulna
  • radius

Question 20

Question
The fibers of a muscle that are connected to the overlying skin fibers are the _____ .
Answer
  • subcutaneous fascia
  • deep fascia
  • subserous fascia
  • tendon

Question 21

Question
The muscle cells within a group such as the biceps brachii are individually called _____ .
Answer
  • sarcolemmas
  • fibers
  • myocyte
  • myofibrils

Question 22

Question
The I bands in a sarcomere are made of _____ .
Answer
  • myosin
  • actin and myosin
  • tropomyosin
  • actin

Question 23

Question
The _____ zone contains only myosin and is in the center of a sarcomere.
Answer
  • A
  • I
  • M
  • H

Question 24

Question
The cisternae are enlarged portions of the _____ .
Answer
  • sarcoplasmic reticulum
  • endoplasmic reticulum
  • transverse tubules
  • T-tubules

Question 25

Question
The gap between the muscle and a nerve is the _____.
Answer
  • synapse
  • motor end plate
  • myoneural junction
  • motor neuron

Question 26

Question
The chemical that crosses a neuromuscular gap is _____.
Answer
  • sodium
  • a protein
  • a neurotransmitter
  • calcium

Question 27

Question
The combination of a neuron and the muscle fiber it associates with is called a/an _____ .
Answer
  • fascicle
  • motor end plate
  • motor unit
  • myoneural junction

Question 28

Question
The most abundant of the muscle proteins is _____ .
Answer
  • actin
  • troponin
  • myosin
  • tropomyosin

Question 29

Question
What is the most abundant storage form of energy within a muscle fiber?
Answer
  • glycogen
  • ADP
  • ATP
  • creatine phosphate

Question 30

Question
What effect does creatine phosphokinase have on muscle activity?
Answer
  • it causes a fiber to relax
  • it stimulates ATP synthesis
  • catalyzes the formation of creatine phosphate
  • causes the breakdown of creatine into creatinine

Question 31

Question
How is excess sugar stored within muscle fibers?
Answer
  • in ATP
  • glycogen
  • glucose
  • creatinine

Question 32

Question
Which main factor allows muscle to sustain contraction even during times when the blood supply is low?
Answer
  • the presence of hemoglobin
  • glycogen storage
  • myoglobin
  • citric acid cycle

Question 33

Question
The reddish brown color of muscle is due to the presence of _____ molecules.
Answer
  • creatine phosphate
  • hemoglobin
  • iron
  • myoglobin

Question 34

Question
Which molecule is produced during exercise, resulting in the oxygen debt?
Answer
  • glycogen
  • lactate
  • pyruvate
  • ATP

Question 35

Question
About _____% of ATP energy becomes liberated as heat from muscle metabolism.
Answer
  • 25
  • 50
  • 75
  • 10

Question 36

Question
A single contraction of a muscle is called a ______.
Answer
  • threshold
  • recruitment
  • twitch
  • myogram

Question 37

Question
The minimum stimulus needed to cause a contraction is called the _____.
Answer
  • all-or-none law
  • threshold
  • sub-maximal stimulus
  • recruitment level

Question 38

Question
The period of time in which a muscle will not respond to a stimulus is called the _____.
Answer
  • latent period
  • refractory period
  • relaxation period
  • threshold

Question 39

Question
The complete contraction of a muscle, without the ability to relax, is called _____.
Answer
  • a sustained contraction
  • fatigue
  • tetanic contraction
  • treppe

Question 40

Question
The constant contraction of a percentage of fibers within a muscle is referred to as _____.
Answer
  • tetany
  • tonus
  • sustained contraction
  • summation

Question 41

Question
Contractions called _____ occur whenever the forces applied to a muscle are increased, but the muscle does not appear to be moving.
Answer
  • isotonic
  • isometric
  • tetanic
  • summation contractions

Question 42

Question
Which of the following muscles always requires nerve impulses in order to contract?
Answer
  • multi-unit smooth
  • skeletal
  • visceral smooth
  • cardiac

Question 43

Question
Which type of muscle is found in the wall of blood vessels?
Answer
  • skeletal
  • cardiac
  • smooth visceral
  • multi-unit smooth

Question 44

Question
Since smooth muscle fibers have rhythmicity and can stimulate each other, they contract in a pattern called _____.
Answer
  • a functional syncytium
  • peristalsis
  • tetany
  • tonus

Question 45

Question
The degeneration of muscle fibers caused by a lack of proper stimulation and usage is called _____.
Answer
  • hypertrophy
  • atrophy
  • dystrophy
  • peristalsis

Question 46

Question
In smooth muscle, calcium ions combine with _____ to allow the actin and myosin cross-bridges to form.
Answer
  • calmodulin
  • troponin
  • myosin
  • tropomyosin

Question 47

Question
Which muscle causes smiling and is attached to the corners of the lips?
Answer
  • zygomatic
  • buccinator
  • temporalis
  • orbicularis oris

Question 48

Question
The _____ is the broad flat muscle on the neck, which causes frowning.
Answer
  • sternocleidomastoid
  • platysma
  • buccinator
  • pterygoid

Question 49

Question
A condition called temporomandibular syndrome can be caused by contraction of the _____.
Answer
  • buccinator
  • masseter
  • platysma
  • frontalis

Question 50

Question
The antagonist of the sternocleidomastoid is the _____.
Answer
  • splenius capitis
  • digastric
  • trapezius
  • semispinalis capitis

Question 51

Question
The triangular shaped muscle on the back that rotates the shoulder is the _____
Answer
  • trapezius
  • rhomboid
  • deltoid
  • levator scapulae

Question 52

Question
The _____ muscle acts to elevate the shoulders.
Answer
  • rhomboideus
  • levator scapulae
  • pectoralis major
  • deltoid

Question 53

Question
Adduction of the scapulae in a posterior view is mainly accomplished by the _____.
Answer
  • trapezius
  • rhomboideus
  • serratus anterior
  • pectoralis minor

Question 54

Question
The _____ will move the shoulders on a forward plane.
Answer
  • pectoralis major
  • pectoralis minor
  • deltoid
  • serratus anterior

Question 55

Question
An antagonist of the teres major is the _____.
Answer
  • pectoralis major
  • supraspinatus
  • infraspinatus
  • subscapularis

Question 56

Question
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Answer
  • pectoralis major
  • deltoid
  • trapezius
  • coracobrachialis

Question 57

Question
The _____ is a common intramuscular injection site, which flexes the shoulder or extends the arm.
Answer
  • pectoralis major
  • deltoid
  • trapezius
  • coracobrachialis

Question 58

Question
Which triangular thoracic muscle causes the arms to move towards the midline?
Answer
  • subscapularis
  • teres minor
  • pectoralis major
  • latissimus dorsi

Question 59

Question
A synergist with the biceps brachii is the _____.
Answer
  • triceps brachii
  • brachialis
  • deltoid
  • supinator

Question 60

Question
The pronator teres inserts on the _____.
Answer
  • radius
  • ulna
  • humerus
  • scapula

Question 61

Question
The psoas major is the antagonist to the _____.
Answer
  • psoas minor
  • gluteus maximus
  • iliacus
  • pectineus

Question 62

Question
The _____ muscle attaches to a long band of tendon which runs down the lateral aspect of the leg.
Answer
  • iliacus
  • tensor fasciae latae
  • adductor longus
  • gracilis

Question 63

Question
The _____ muscle causes one to cross the leg by adducting the thigh and flexing the lower leg.
Answer
  • iliopsoas
  • sartorius
  • gracilis
  • adductor magnus

Question 64

Question
Which muscle runs from the anterior superior iliac spine to the medial tibial surface near the patella?
Answer
  • vastus medialis
  • vastus lateralis
  • semitendinosus
  • sartorius

Question 65

Question
The following cause dorsiflexion of the foot except which one?
Answer
  • extensor digitorum longus
  • soleus
  • tibialis anterior
  • peroneus tertius

Question 66

Question
Which of the following is attached to the calcaneus?
Answer
  • gastrocnemius
  • tibialis posterior
  • peroneus longus
  • peroneus tertius

Question 67

Question
The _____ is inserted on the base of the first metatarsal.
Answer
  • soleus
  • tibialis anterior
  • tibialis posterior
  • extensor digitorum longus

Question 68

Question
Spontaneous contraction of random groups of muscles is called _____.
Answer
  • syncytium
  • peristalsis
  • fibrillation
  • contracture

Question 69

Question
A disease which results in muscle weakness because of abnormal neuromuscular junction activity is _____.
Answer
  • poliomyelitis
  • myasthenia gravis
  • multiple sclerosis
  • muscular dystrophy

Question 70

Question
Which of the following refers to a prolonged muscular spasm?
Answer
  • myotonia
  • paresis
  • myalgia
  • contracture

Question 71

Question
The layer of connective tissue that separates the muscle tissue into small sections is called the ______________.
Answer
  • aponeuroses
  • epimysium
  • perimysium
  • endomysium

Question 72

Question
The segment of a myofibril that is called a sarcomere runs from _______________.
Answer
  • one Z line to the next Z line
  • one H zone to the next H zone
  • one A band to the next A band
  • one end of a skeletal muscle to the opposite end

Question 73

Question
The ______________ are an invagination of the muscle cell's sarcolemma.
Answer
  • sarcoplasmic reticula
  • transverse (T) tubules
  • cisternae
  • microtubules

Question 74

Question
Into what does the neuron release its neurotransmitter at the neuromuscular junction?
Answer
  • motor end plate
  • cytoplasm of the muscle cell
  • cisternae
  • synaptic cleft

Question 75

Question
A motor unit is made up of _______________.
Answer
  • all the muscle fibers within a given muscle
  • a motor neuron and the muscle fibers it innervates
  • all the neurons going into an individual section of the body
  • a fascicle and a nerve

Question 76

Question
The crossbridges involved in muscle contraction are located on the ________________.
Answer
  • myosin myofilaments
  • actin myofilaments
  • tropomyosin
  • dystrophin

Question 77

Question
Which of these statements is correct regarding skeletal muscle contraction?
Answer
  • All motor units act together.
  • Muscle contraction continues for long periods after nervous stimulation ceases.
  • The crossbridges bind to the actin and shorten the sarcomeres.
  • Dystrophin is not needed to strengthen the contracting muscle cell.

Question 78

Question
The type of muscle found in the irises of the eyes and in the blood vessels is called _______________.
Answer
  • visceral smooth muscle
  • multiunit smooth muscle
  • cardiac muscle
  • skeletal muscle

Question 79

Question
Why can cardiac muscle fibers contract for longer periods than skeletal muscle fibers?
Answer
  • Cardiac muscle is self-excitatory.
  • Extracellular calcium partially controls the strength (and length) of contraction.
  • Cisternae of T-tubules is more developed in cardiac muscle.
  • Cardiac muscle is uninucleate rather than multinucleate.

Question 80

Question
Which muscle enables you to pucker your lips for a kiss?
Answer
  • epicranius
  • buccinator
  • orbicularis oris
  • orbicularis oculi

Question 81

Question
The muscle that enables you to elevate and adduct your scapula is the ____________.
Answer
  • serratus anterior
  • sternocleidomastoid
  • splenius capitis
  • rhomboideus major

Question 82

Question
Which muscle is the strongest flexor of the elbow?
Answer
  • brachialis
  • biceps brachii
  • brachioradialis
  • deltoid

Question 83

Question
The biceps femoris is one hamstring muscle located on the back of the thigh. Which muscle is another hamstring?
Answer
  • adductor magnus
  • semitendinosus
  • gluteus maximus
  • quadriceps femoris

Question 84

Question
Muscles that are NOT used, may degenerate or undergo a process of _____.
Answer
  • atrophy
  • hypertrophy
  • fatigue
  • tetany

Question 85

Question
Muscles that act to cause similar movements are called _____.
Answer
  • antagonists
  • origins
  • insertions
  • synergists

Question 86

Question
The triangle shaped muscle which antagonizes the sternocleidomastoid is the _____.
Answer
  • deltoid
  • pectoralis major
  • external oblique
  • trapezius

Question 87

Question
The antagonist to the triceps brachii is the _____.
Answer
  • deltoid
  • pectoralis major
  • brachialis
  • serratus anterior
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