Chapter 10 Part 7 (multiple choice) Flashcards Preview

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Flashcards in Chapter 10 Part 7 (multiple choice) Deck (19):
1

A nursing infant develops a powerful sucking muscle that adults also use for whistling. What is this muscle called?
A) buccinator
B) zygomaticus
C) platysma
D) masseter

A) buccinator

2

Spasms of this straplike muscle often result in wryneck or torticollis.
A) platysma
B) zygomaticus
C) sternocleidomastoid
D) serratus anterior

C) sternocleidomastoid

3

Which generalization concerning movement by skeletal muscles is not true?
A) The bones serve as levers.
B) The movements produced may be of graded intensity.
C) During contraction the two articulating bones move equally.
D) Muscles produce movement by pulling on bones.

C) During contraction the two articulating bones move equally.

4

Which of these is not a way of classifying muscles?
A) muscle location
B) the type of action they cause
C) muscle shape
D) the type of muscle fibers

D) the type of muscle fibers

5

Which of the following muscles is not a member of the hamstrings group?
A) vastus intermedius
B) semitendinosus
C) biceps brachii
D) semimembranosus

A) vastus intermedius

6

Which of the following best describes the orbicularis oris?
A) It closes, purses, and protrudes the lips.
B) It draws the eyebrows together.
C) It closes the eye.
D) It pulls the lower lip down and back.

A) It closes, purses, and protrudes the lips.

7

Which muscle group is involved when a "pulled groin" occurs?
A) hamstrings
B) lateral rotators
C) thigh adductors
D) quadricepts

C) thigh adductors

8

What are the levers that operate at a mechanical advantage called?
A) functional levers
B) speed levers
C) power levers
D) dysfunctional levers

C) power levers

9

Tennis players often complain about pain in the arm (forearm) that swings the racquet. What muscle is usually strained under these conditions?
A) the triceps brachii
B) the flexor digitorum profundus
C) the brachioradialis
D) the anconeus

C) the brachioradialis

10

Which muscles is (are) contracted to exhale forcibly?
A) rectus abdominis and diaphragm
B) external intercostals and diaphragm
C) diaphragm alone
D) internal intercostals and rectus abdominus

D) internal intercostals and rectus abdominus

11

Paralysis of which of the following would make an individual unable to flex the thigh?
A) soleus
B) vastus medialis
C) biceps femoris
D) iliopsoas and rectus femoris

D) iliopsoas and rectus femoris

12

First-class levers ________.
A) have load at one end of the lever, fulcrum at the other, and effort applied somewhere in the middle
B) in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location
C) are typified by tweezers or forceps
D) are the type using joints forming the ball of the foot as formed in raising the body on the toes

B) in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location

13

What do the genioglossus, hyoglossus, and styloglossus muscles have in common?
A) Each acts synergistically to elevate the jaw.
B) All names indicate the relative size of the muscle.
C) All names reflect direction of muscle fibers.
D) All act on the tongue.

D) All act on the tongue.

14

If L = load, F = fulcrum, and E = effort, what type of lever system is described as LEF?
A) second-class lever
B) fourth-class lever
C) first-class lever
D) third-class lever

D) third-class lever

15

Which of the following muscles is a flexor of the thigh?
A) gluteus maximus
B) tibialis posterior
C) vastus lateralis
D) adductor magnus

D) adductor magnus

16

Which of the following muscles is involved in inversion at the ankle joint?
A) peroneus tertius
B) tibialis anterior
C) extensor digitorum longus
D) peroneus longus

B) tibialis anterior

17

Which of the following muscles serves as a common intramuscular injection site, particularly in infants?
A) the vastus lateralis
B) rectus femoris
C) the vastus medialis
D) the vastus intermedius

A) the vastus lateralis

18

Paralysis of which of the following muscles would make an individual unable to flex the knee?
A) hamstring muscles
B) brachioradialis
C) soleus
D) gluteal muscles

A) hamstring muscles

19

Which of the following muscles does not act in plantar flexion?
A) flexor digitorum longus
B) tibialis posterior
C) gastrocnemius and soleus
D) popliteus

D) popliteus