Deck 6: The Upper Extremity: The Elbow, Forearm, Wrist, and Hand

Question 1

What would be the primary differences in muscular action (prime movers) between grasping something with a closed fist and pinching an object between finger and thumb?

Answer 1

involvement of the opponens

Question 2

Which of the following is deviation of the hand at the wrist toward the thumb side of the hand?

A) flexion
B) ulnar deviation
C) radial deviation
D) palmar flexion

Answer 2

radial deviation

Question 3

The radioulnar joint is a ____ joint.

A) pivot
B) hinge
C) gliding
D) condyloid

Answer 3

pivot

Question 4

Which bones of the forearm form a major part of the elbow joint?

A) radius
B) fibula
C) ulna
D) carpal

Question 5

Which of the following muscles would contribute most to your grip in racquetball?

A) flexor digitorum superficialis, extensor digitorum
B) extensor digitorum, flexor pollicis longus
C) flexor digitorum superficialis, flexor pollicis longus
D) extensor digitorum, 4

Question 6

Which muscles enable the thumb to form a pinch type grasp with each of the four digits?

A) the lumbricales manus
B) the opponens digiti and pollicus
C) the flexor digiti and pollicus
D) the extensor digiti and pollicus
Short Answer Questions

Question 7

The ligament that forms a ring within which the radial head rotates is called the ____ ligament.

A) volar
B) annular
C) ulnar
D) collateral

Question 8

Which of the following is the prime mover in elbow extension during the up phase of the pushup?

A) biceps brachii
B) pectoralis major
C) triceps brachii
D) brachialis

Question 9

In which of the following actions will the biceps brachii be most active?

A) a pull-up with the forearm pronated
B) a pushup
C) a pull-up with the forearms supinated
D) a bench press

Question 10

List the prime movers in elbow extension in each of the following conditions:
from the flexed position in a biceps curl
from flexed position in a biceps curl in a weightless environment
from a position of elbow flexion with the shoulder abducted to 90 ^$\circ$

Question 11

List the prime movers at the wrist in the extension action necessary when "cocking" the wrist in badminton.

Question 12

Which of the following muscles attaches to the styloid process of the radius?

A) brachioradialis
B) biceps brachii
C) brachialis
D) triceps brachii

Question 13

What type of joint is the articulation between the carpals and the radius (the radiocarpal joint)?

A) gliding
B) condyloid
C) pivot
D) hinge

Question 14

Why may a person successfully complete a pull-up with the forearms supinated, but fail with the forearms pronated?

Question 15

The ulna is on the ____ side of the hand.

A) thumb
B) little finger
C) both, depending on rotation
D) neither

Question 16

Which of the following does not flex the forearm at the elbow?

A) biceps brachii
B) brachialis
C) brachioradialis
D) coracobrachialis

Question 17

In a tennis stroke, stroke strong forearm pronation is used to give top spin to the ball. Which are the prime movers for this?

A) pronator teres, pronator quadratus
B) pronator teres, pronator quadratus, biceps brachii
C) pronator teres, pronator quadratus, biceps brachii, brachialis
D) pronator teres, pronator quadratus, brachialis

Question 18

Which are the active muscles at the elbow during the down phase of the pull-up?

A) triceps brachii, anconeus
B) biceps brachii, brachialis, brachioradialis
C) triceps brachii, brachialis, brachioradialis
D) anconeus, brachialis, brachioradialis

Question 19

During a forehand drive in tennis which muscles are primarily responsible for maintaining a "stiff wrist" when contacting the ball?

A) extensor carpi ulnaris and extensor carpi radialis
B) extensor carpi radialis and flexor carpi radialis
C) flexor carpi ulnaris and extensor carpi ulnaris
D) flexor carpi ulnaris and flexor carpi radialis

Question 20

What are the possible negative consequences of repeated ulnar or radial deviation motions?