Brachial Plexes: Branch Sensory Innervation EXAM 2 Material

Question 1

Median Nerve Sensory

Answer 1

Palmar Side: 1st-3rd digits to palm and radial half of 4th digit to palm
Volar Side: 1st-3rd digits and half of 4th to PIP joint

Question 2

Median Nerve muscle innervation

Answer 2

Flexor and Pronator muscles of wrist and fingers

Opposition of Thenar Muscles (thumb)

Question 3

Musculocutaneous Nerve Sensory

Answer 3

Radial side of forearm up to elbow on anterior and posterior side

Question 4

Musculocutaneous Nerve muscle innervation

Answer 4

Elbow flexors

Question 5

Radial Nerve Sensory

Answer 5

Volar Side: 1st 2nd and half of 3rd digits from wrist to PIP

Also wrist drop occurs

Question 6

Radial nerve muscle innervation

Answer 6

Extensor and supinator muscle group

Wrist drop in radial nerve injury

Question 7

Ulnar nerve sensory

Answer 7

Palmar side: 5th digit and half of 4th digit up to wrist

Volar Side: 5th digit and half of 4th up to wrist, also 3rd digit from PIP to wrist

Question 8

Ulnar Nerve muscle innervation

Answer 8

Intrinsic muscle group

Clawhand deformity

Question 9

Radial Nerve Injury

Answer 9

Wrist drop

Question 10

Ulnar Nerve injury

Answer 10

Clawhand