Chapter 5

Question 1

Which muscle extends the index finger and allows it to function independently from the other three fingers?

Answer 1

Extensor indicis

Question 2

Which of the following is a centrally located wrist flexor and cannot abduct or adduct the wrist?

Answer 2

Palmaris longus

Question 3

*Which of the following muscles flexes the elbow, attached to the ulna, and cannot rotate the forearm?

Answer 3

Brachialis

Question 4

Which muscle works with pronator teres to pronate the forearm?

Answer 4

Pronator quadratus

Question 5

True or False? Extensor digiti minimi extends the thumb

Answer 5

False

“Smallest finger extender”

Question 6

*Which muscle reverses the action of pronator teres and is used in throwing a curve ball in baseball?

Answer 6

Supinator

Question 7

True or False? Extensor pollicis brevis works synergistically with extensor pollicis longus

Answer 7

True

Question 8

*Strong contraction of which of the following muscles is required to turn a screwdriver?

Answer 8

Pronator teres

Question 9

True or False? When contracted, abductor pollicis longus pulls the thumb away from the palm of the hand

Answer 9

True

Question 10

*True or False? Extensor pollicis longus flexes the thumb and is used when grasping objects

Answer 10

False

Question 11

True or False? Performing resisted Range of motion helps establish the health and function of the dynamic stabilizers and prime movers in the elbow forearm, wrist, and hand

Answer 11

True

Question 12

which muscle is the most medial of the forearm extensors?

Answer 12

Extensor carpi ulnaris

Question 13

*Which of the following muscles flexes the elbow and pronates and supinates the forearm?

Answer 13

Brachioradialis

Question 14

*Which muscle extends the wrist and creates the subtle “flicking”action used in throwing a frisbee?

Answer 14

Extensor carpi radialis brevis

Question 15

Which of the following is the most lateral of the three superficial wrist flexors and also radially deviates the wrist?

Answer 15

Flexor carpi radialis

Question 16

*Overuse of extensor carpi radialis longus can result in irritation of the lateral epicondyle, this condition is known as which of the following?

Answer 16

Tennis Elbow

Question 17

Besides flexing the wrist,flexor carpi ulnaris also performs which of the following actions?

Answer 17

Ulnarly deviates wrist

Question 18

*Which of the following muscles flexes the thumb?

Answer 18

Flexor pollicis longus

Question 19

*Which of the following muscles has a name that roughly means “finger or toe bender near the surface”?

Answer 19

Flexor digitorum superficialis

Question 20

Which of the following muscles assists triceps brachii in extending the elbow?

Answer 20

Anconeus