all10

Skeletal muscles constitute approximately ______ of our body weight.

10%

25%

50%

75%

The connective tissue sheath that envelops bundles of muscle fibers is:

epimysium

B.	endomysium

C.	periosteum

D.	perimysium

The covering of individual muscle fibers is:

epimysium

B.	endomysium

C.	periosteum

D.	perimysium

Groups of skeletal muscle fibers are bound together by a connective tissue envelope called the:

A.	endomysium

B.	perimysium

epimysium

D.	aponeurosis

Skeletal muscles constitute:

A.	20% to 30% of body weight

B.	30% to 40% of body weight

C.	40% to 50% of body weight

D.	50% to 60% of body weight

An aponeurosis could be described as a:

A.	flat sheet of connective tissue connecting muscle to other structures

B.	sheath that surrounds tendons

C.	deep fascia that covers muscles

D.	junction between a neuron and a muscle

Muscles that contract at the same time as the prime mover are called:

A.	synergists

fixators

C.	contractors

D.	antagonists

Which of the following is not a component of a lever system?

fixator

bone

joint

pull

The type of lever arrangement in which the pull is exerted between the fulcrum and resistance or weight to be moved is a:

A.	first-class lever

B.	second-class lever

C.	third-class lever

D.	fourth-class lever

10.

Muscles may be named according to:

function

B.	direction of fibers

C.	points of attachment

D.	all of the above

11.

Which of the following muscles is an example of an extensor?

deltoid

B.	peroneus longus

C.	flexor carpi radialis

trapezius

12.

A muscle that assists with mastication is the:

A.	orbicularis oris

B.	buccinator

platysma

masseter

13.

The muscle that draws the eyebrows together, producing vertical wrinkles above the nose (frowning), is called the:

A.	epicranius

B.	corrugator supercilii

C.	orbicularis oculi

D.	orbicularis oris

14.

Which of the following muscles has fibers on a transverse plane?

A.	rectus abdominis

B.	external oblique

C.	transverse abdominis

D.	internal intercostals

15.

Which of the following muscles function(s) to compress the abdomen?

A.	external oblique

B.	internal oblique

C.	transversus abdominis

D.	all of the above

16.

The muscle(s) that form most of the pelvic floor is/are the:

A.	levator ani

coccygeus

C.	ischiocavernosus

D.	both a and b

17.

Which of the following muscles does not move the upper arm?

A.	pectoralis major

B.	latissimus dorsi

deltoid

trapezius

18.

All of the following muscles are part of the rotator cuff muscles except:

deltoid

B.	infraspinatus

C.	supraspinatus

D.	teres minor

19.

The teres major and teres minor muscles move the:

forearm

upper arm

shoulder

wrist

20.

The muscle that allows the thumb to be drawn across the palm to touch the tip of any finger is the:

A.	extensor digitorum

B.	opponens pollicis

C.	palmaris longus

D.	flexor carpi radialis

21.

The muscle that raises or lowers the shoulders or shrugs them is the:

deltoid

B.	latissimus dorsi

trapezius

D.	pectoralis minor

22.

The muscle that extends and adducts the upper arm is the:

deltoid

B.	latissimus dorsi

trapezius

D.	pectoralis minor

23.

The posterior arm muscle that extends the forearm is the:

A.	biceps brachii

B.	triceps brachii

supinator

D.	brachialis

24.

The muscle that flexes the semipronated or semisupinated forearm is the:

A.	biceps brachii

B.	brachialis

C.	brachioradialis

D.	triceps brachii

25.

The muscle that pronates the forearm is the:

A.	biceps brachii

B.	brachioradialis

supinator

D.	pronator muscles

26.

Muscles that move the upper arm originate on the:

A.	ulna and humerus

B.	clavicle and scapula

humerus

D.	ulna and radius

27.

In pushing (pressing) a weight from shoulder height to overhead, which of the following muscles is least utilized?

A.	triceps brachii

B.	biceps brachii

deltoid

28.

The muscle(s) assisting in rotating the arm outward is/are the:

A.	teres minor

B.	latissimus dorsi

C.	supraspinatus

D.	all of the above

29.

The action of the brachialis muscle is to:

A.	flex the forearm

B.	extend the forearm

C.	pronate the forearm

D.	supinate the forearm

30.

The flexor muscles that move the fingers are located:

A.	on the anterior lateral surface of the forearm

B.	on the anterior medial surface of the forearm

C.	on the posterior surface of the forearm

D.	on the posterior surface of the hand

31.

Which of the following is not a muscle that moves the thigh?

A.	adductor longus

gracilis

iliopsoas

D.	sacrospinalis

32.

Which of the following is not a muscle of the quadriceps femoris group?

A.	rectus femoris

B.	biceps femoris

C.	vastus medialis

D.	vastus intermedius

33.

When an athlete injures a muscle of the hamstring group, the injury is on the:

upper arm

B.	posterior lower leg

C.	posterior thigh

D.	anterior thigh

34.

Which of the following is not a muscle that moves the foot?

sartorius

B.	peroneus longus

C.	tibialis anterior

soleus

35.

The common tendon(s) of the gastrocnemius and soleus is/are the:

calcaneal

B.	Achilles tendon

C.	both a and b

D.	neither a nor b

36.

Muscles located on the lower leg move the:

thigh

hip

knee

foot

37.

Which of the following body systems assists the muscles in maintaining posture?

A.	digestive system

B.	endocrine system

C.	excretory system

D.	all of the above

38.

The epimysium, endomysium, and perimysium may all be continuous with ligaments.

True

False

39.

Tendons are often continuous with the endosteum of bone tissue.

True

False

40.

There are more than 600 muscles in the body.

True

False

41.

When a muscle contracts, the bone moved is the bone of insertion.

True

False

42.

The insertion is that point of attachment that does not move when the muscle contracts.

True

False

43.

Tendons are continuous with the layer of connective tissue called the epimysium.

True

False

44.

The direction of the fibers composing a muscle is insignificant to its function.

True

False

45.

Tipping the head back on its atlas is an example of a third-class lever.

True

False

46.

A bipennate arrangement of muscle fibers produces a strong contraction.

True

False

47.

Muscles classified as antagonists oppose normal movement patterns.

True

False

48.

Muscles often act singly as a prime mover.

True

False

49.

In a lever system, the fixed pivot around which the rod moves is called the fulcrum.

True

False

50.

A set of scales and a pair of scissors are both examples of second-class levers.

True

False

51.

The gluteus muscles are examples of muscles that are named as a result of location.

True

False

52.

In muscle terminology, the term rectus means straight.

True

False

53.

Muscles usually originate distal to the point of insertion.

True

False

54.

The muscles of facial expression are unique in that at least one of their points of attachment is to the deep layers of skin over the face or neck.

True

False

55.

Contraction of the internal intercostal muscles elevates the ribs.

True

False

56.

The deltoid is an example of a multifunction muscle.

True

False

57.

The pelvic girdle differs from the shoulder girdle in that the pelvic girdle is essentially fixed.

True

False

58.

Intrinsic foot muscles are responsible for movement of the ankle and foot.

True

False

59.

The Achilles tendon is common to both the gastrocnemius and soleus.

True

False

60.

The soleus muscle is responsible for plantar flexion.

True

False

61.

The gastrocnemius and soleus muscles act as antagonists.

True

False

62.

The maintenance of body posture depends only on skeletal muscles and bones.

True

False

63.

Muscles maintain posture by the property of tonicity.

True

False

64.

Because tonicity is present during sleep, muscle pull does not counteract the pull of gravity.

True

False

65.

The circulatory system is responsible for muscle tone.

True

False

66.

Poor posture puts abnormal strain on bones and may eventually produce deformities.

True

False

67.

With aging, connective tissue replaces some muscle fibers, causing decreased muscle strength.

True

False

68.

The respiratory, digestive, circulatory, excretory, and endocrine systems all contribute something toward the ability of muscles to maintain posture.

True

False

69.

The following features are used in the naming of muscles. Match the feature with the muscles or terms listed.

A. location
B. function
C. shape
D. direction of fibers
E. number of heads or divisions
F. points of attachment

R-1 Ref 10-69

_____ triceps

Answer:

70.

R-1 Ref 10-69

_____ rectus

Answer:

71.

R-1 Ref 10-69

_____ biceps

Answer:

72.

R-1 Ref 10-69

_____ adductors

Answer:

73.

R-1 Ref 10-69

_____ brachialis

Answer:

74.

R-1 Ref 10-69

_____ quadriceps

Answer:

75.

R-1 Ref 10-69

_____ deltoid

Answer:

76.

R-1 Ref 10-69

_____ gluteus

Answer:

77.

R-1 Ref 10-69

_____ sternocleidomastoid

Answer:

78.

R-1 Ref 10-69

_____ pronator

Answer:

79.

Match the muscles with the correct statement or definition.

A. buccinator
B. corrugator supercilii
C. epicranius
D. orbicularis oculi
E. pterygoids
F. sternocleidomastoid

R-2 Ref 10-79

_____ draw(s) the eyebrows together, producing vertical wrinkles (frowning)

Answer:

80.

Match the muscles with the correct statement or definition.

A. buccinator
B. corrugator supercilii
C. epicranius
D. orbicularis oculi
E. pterygoids
F. sternocleidomastoid

R-2 Ref 10-79

_____ grate(s) the teeth during mastication

Answer:

81.

Match the muscles with the correct statement or definition.

A. buccinator
B. corrugator supercilii
C. epicranius
D. orbicularis oculi
E. pterygoids
F. sternocleidomastoid

R-2 Ref 10-79

_____ responsible for smiling

Answer:

82.

Match the muscles with the correct statement or definition.

A. buccinator
B. corrugator supercilii
C. epicranius
D. orbicularis oculi
E. pterygoids
F. sternocleidomastoid

R-2 Ref 10-79

_____ raise(s) the eyebrows (surprise)

Answer:

83.

Match the muscles with the correct statement or definition.

A. buccinator
B. corrugator supercilii
C. epicranius
D. orbicularis oculi
E. pterygoids
F. sternocleidomastoid

R-2 Ref 10-79

_____ flex(es) the head (prayer muscle)

Answer:

84.

Match the muscles with the correct statement or definition.

A. buccinator
B. corrugator supercilii
C. epicranius
D. orbicularis oculi
E. pterygoids
F. sternocleidomastoid

R-2 Ref 10-79

_____ close(s) the eye

Answer:

85.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ biceps brachii

Answer:

86.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ gluteus maximus

Answer:

87.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ gluteus medius

Answer:

88.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ semispinalis capitis

Answer:

89.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ sternocleidomastoids

Answer:

90.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ triceps brachii

Answer:

91.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ adductor longus

Answer:

92.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ soleus

Answer:

93.

Match the following muscles with their action.

A. abduction
B. adduction
C. flexion
D. extension

R-3 Ref 10-85

_____ rectus femoris

Answer:

94.

Match each term with the correct statement or definition.

A. antagonists
B. fixators
C. prime movers
D. synergists

R-4 Ref 10-94

_____ muscles that work together to accomplish a movement

Answer:

95.

Match each term with the correct statement or definition.

A. antagonists
B. fixators
C. prime movers
D. synergists

R-4 Ref 10-94

_____ muscles that play the major role in accomplishing a particular movement

Answer:

96.

Match each term with the correct statement or definition.

A. antagonists
B. fixators
C. prime movers
D. synergists

R-4 Ref 10-94

_____
muscles that contract at the same time as the prime mover, producing a

more effective movement

Answer:

97.

Match each term with the correct statement or definition.

A. antagonists
B. fixators
C. prime movers
D. synergists

R-4 Ref 10-94

_____
muscles that help to maintain posture or balance during contraction of

muscles acting on joints in the arms and legs

Answer:

98.