Ch. 12 Assignment and Quiz

Question 1

An opera singer pulled a muscle in her back and now finds it painful to project her voice forcibly. Which muscle is likely pulled?
a. Latissimus dorsi
b. Levator scapulae
c. Trapezius
d. Rhomboid minor

Answer 1

a. Latissimus dorsi

Question 2

Mehar dislocates her arm kayaking but her orthopedist finds her SITS muscles all uninjured and intact. However, she still has occasional subluxation of her arm. What else could cause this?
a. The long head of the biceps brachii was torn.
b. The medial head of the triceps brachii was torn.
c. The posterior fibers of the deltoid were torn.
d. The superior fibers of the trapezius were torn.

Answer 2

a. The long head of the biceps brachii was torn.

Question 3

After playing badminton all afternoon, Ahmed is having difficulty pronating his right hand. Which of the muscles is least likely to be injured?
a. Brachioradialis
b. Anconeus
c. Pronator quadratus
d. Pronator teres

Answer 3

a. Brachioradialis

Question 4

The interosseous muscles lie between which of the following?
a. The ribs
b. The tibia and fibula
c. The radius and ulna
d. The metacarpals
e. The phalanges

Answer 4

d. The metacarpals

Question 5

The web between your thumb and palm consists mainly of the __________ pollicis muscle.

Answer 5

adductor

Question 6

hich muscle would you use to produce a forceful depression of the scapula, as in the down-stroke of hammering a nail?
a. Trapezius
b. Pectoralis minor
c. Serratus anterior
d. Levator scapula

Answer 6

a. Trapezius

Question 7

Both the gastrocnemius and __________ muscles attach to the heel by way of the calcaneal tendon.
a. semimembranosus
b. tibialis posterior
c. tibialis anterior
d. soleus
e. plantaris

Answer 7

d. soleus

Question 8

The primary actions of the gracilis are to __________ the thigh and medially rotate the tibia at the knee.
a. flex
b. abduct
c. adduct
d. extend

Answer 8

a. flex

Question 9

Which of the following muscles is found in the thenar eminence?
a. Dorsal interosseous
b. Lumbricals
c. Opponens pollicis
d. Flexor digitorum brevis
e. Abductor digiti minimi

Answer 9

c. Opponens pollicis

Question 10

Which of the following muscles is the prime mover for extending the elbow?
a. Triceps brachii
b. Latissimus dorsi
c. Serratus anterior
d. Biceps brachii
e. Pectoralis major

Answer 10

a. Triceps brachii

Question 11

Which of the following muscles is not in the anterior compartment of the forearm?
a. Supinator
b. Flexor digitorum profundus
c. Flexor pollicis longus
d. Flexor carpi radialis
e. Palmaris longus

Answer 11

a. Supinator

Question 12

ill has taken up boxing and notices her thoracic musculature becoming more defined. Which of the following muscles would show the greatest definition given her new activity?
a. Subscapularis
b. Trapezius
c. Serratus anterior
d. Levator scapulae

Answer 12

c. Serratus anterior

Question 13

Which of the following muscles is especially important when doing pull-ups?
a. Latissimus dorsi
b. Pectoralis major
c. Teres major
d. Triceps brachii
e. Coracobrachialis

Answer 13

a. Latissimus dorsi

Question 14

When a nurse draws blood, it is not uncommon for the needle to penetrate which muscle near the cubital region?
a. Supinator
b. Semimembranosus
c. Buccinator
d. Pronator teres
e. Pronator quadratus

Answer 14

d. Pronator teres

Question 15

The antagonist to the triceps brachii is the __________.
a. brachialis
b. supinator
c. anconeus
d. teres minor
e. deltoid

Answer 15

a. brachialis

Question 16

Ali has just gotten a new job assembling electronics; this requires him to spend long hours using a screwdriver. After a week his forearm is rather sore. Which of the following muscles is likely being overworked?
a. Supinator
b. Pronator teres
c. Brachioradialis
d. Brachialis

Answer 16

a. Supinator

Question 17

Which of the following is an intrinsic muscle of the hand?
a. Adductor pollicis
b. Abductor pollicis longus
c. Extensor carpi radialis brevis
d. Extensor pollicis longus
e. Extensor indicis

Answer 17

a. Adductor pollicis

Question 18

In the upper and lower appendages, the fasciae divide the muscles into __________.
a. chambers
b. bundles
c. septa
d. compartments

Answer 18

d. compartments

Question 19

Which of the following muscles is the most active when doing push-ups?
a. Pectoralis major
b. Latissimus dorsi
c. Pectoralis minor
d. Trapezius
e. Biceps brachii

Answer 19

a. Pectoralis major

Question 20

Which of the following muscles is most active when pulling the oars back while rowing a boat?
a. Biceps brachii
b. Latissimus dorsi
c. Deltoid
d. Teres major
e. Pectoralis major

Answer 20

b. Latissimus dorsi

Question 21

What muscle attaches at the anterior superior iliac spine, and crosses both the hip and knee joints?
a. Sartorius
b. Vastus medialis
c. Adductor magnus
d. Rectus femoris
e. Iliacus

Answer 21

a. Sartorius

Question 22

Which of the following belongs to the triceps surae of the calf?
a. The tibialis anterior muscle
b. The calcaneal tendon
c. The plantaris muscle
d. The tibialis posterior muscle
e. The soleus muscle

Answer 22

e. The soleus muscle

Question 23

What is the longest muscle in the human body?
a. Sartorius
b. Rectus femoris
c. Rectus abdominis
d. Gastrocnemius
e. Triceps brachii

Answer 23

a. Sartorius

Question 24

From what muscles does the calcaneal tendon arise?
a. Gastrocnemius and soleus
b. Fibularis longus and brevis
c. Lateral rotator muscles
d. Semitendinosus and semimembranosus
e. Adductor longus, adductor brevis, and adductor magnus

Answer 24

a. Gastrocnemius and soleus

Question 25

After kicking a ball at a soccer match, Leticia feels excruciating pain at the back of her thigh. She has likely suffered an injury to which of the following? a. The calcaneal tendon b. The hamstrings c. The quadriceps femoris d. The sciatic nerve e. The thigh adductors

Answer 25

b. The hamstrings

Question 26

The Latin term "hallucis" is used to refer to which of the following? a. The thumb b. The wrist c. The head d. The big toe e. The ankle

Answer 26

d. The big toe

Question 27

Crossing your legs while sitting employs primarily which muscle? a. The piriformis b. The sartorius c. The superior gemellus d. The quadriceps femoris e. The pectineus

Answer 27

b. The sartorius

Question 28

An elephant trainer sustains a crushing injury to his foot. After weeks of care, he begins to notice that he cannot bend the little toe on his right foot. Which of the following would be a logical diagnosis? a. Atrophy of the soleus b. Atrophy of the fibularis brevis c. Atrophy of the flexor digiti minimi d. Atrophy of the adductor hallucis e. Atrophy of the flexor hallucis brevis

Answer 28

c. Atrophy of the flexor digiti minimi