Upper extremity: Nerve Actions

Question 1

Dorsal Scapular

Answer 1

Scapula: elevation, inferior rotation, retraction (adduction)

Question 2

Long Thoracic

Answer 2

Scapula: abduction (protraction), upward rotation

Question 3

Suprascapular

Answer 3

Arm: lateral rotation, abduction

Question 4

Lateral Pectoral, Medial Pectoral

Answer 4

Arm: adduction, flexion, medial rotation
Scapula: protraction (abduction)

Question 5

Musculocutaneous

Answer 5

Arm: flexion, adduction
Forearm: flexion, supination

Question 6

Lateral Root of Median: forearm

Answer 6

Hand: flexes at wrist, abducts at wrist.
MP & IP: flexes
Forearm: flexes, pronates

Question 7

Lateral Root of Median: hand

Answer 7

MP: Flexes
IP: Extends

Question 8

Lateral Root of Median: recurrent branch

Answer 8

Thumb: flexes, abducts, opposition

Question 9

Ulnar

Answer 9

Hand: flexes at wrist, adducts at wrist

MP & IP: Flexes

Question 10

Ulnar Deep Branch

Answer 10

5th Digit: abducts, flexes
Thumb: flexes, adducts
MP: abducts, adducts, flexes
IP: extends

Question 11

Upper Subscapular, Lower Subscapular, Middle Subscapular (Thoracodorsal)

Answer 11

Arm: adduction, medial rotation, (extension-thoracodorsal)

Question 12

Axillary

Answer 12

Arm: abduction, flexion, extension, medial rotation, lateral rotation

Question 13

Radial: arm

Answer 13

Arm: extension
Forearm: flexion, extension

Question 14

Radial: forearm

Answer 14

Forearm: flexes, supinates
Hand: extends at wrist, abducts at wrist, adducts at wrist
MP & IP: extends 2nd -5th
Thumb: extends, abducts