Upper limb

Question 1

Radial nerve Function

Answer 1

important for the extension of all joints in the arm and hand.

Question 2

function of the median

Answer 2

important for the thumb side of the hand and wrist

Question 3

function of the ulnar nerve

Answer 3

important for the little finger side of the hand and writst

Question 4

radial nerve lesion (motor deficits)

Answer 4

extension of the arm, wrist (wrist drop), and finger joints. supination of the forearm. abduct the thumb in the plane of the palm.

Question 5

radial nerve lesion (sensory)

Answer 5

Posteriolateral arm, posterior strip on the forearm, dorsal surface of the thumb, lateral surface of the hand, and the dorsum of the first 3.5 digits.

Question 6

median nerve lesion (motor)

Answer 6

flex and oppose thumb, flex digits 2 & 3, flex or abduct wrist (ape hand), pronate forearm

Question 7

median nerve lesion (sensory)

Answer 7

lateral palm, ventral thumb and digits 2 & 3, dorsal tip of the thumb, and digits 2 & 3.

Question 8

Ulnar nerve lesion (motor)

Answer 8

adduct and abduct fingers other than thumb, adduct thumb, flex digits 4 & 5 (claw hand), flex and adduct wrist.

Question 9

ulnar nerve lesion (sensory)

Answer 9

medial palm, all of the 5th digit, and the medial side of the 4th digit.

Question 10

axillary nerve lesion (motor)

Answer 10

abduct arm at shoulder beyond 15 degrees

Question 11

axillary nerve lesion (sensory)

Answer 11

spot on the lateral arm over the deltoid

Question 12

musculocutaneous nerve lesion (motor)

Answer 12

flex the arm at the elbow and supinate forearm

Question 13

musculocutaneous nerve lesion (sensory)

Answer 13

lateral forearm.