Median nerve

Question 1

Course of median nerve

Answer 1

Originates from medial and lateral cords then leaves axilla
Descends down arm, initially lateral to brachial artery
Enters cubital fossa medially
In forearm it travels between flexor digitorum superficialis and profundus
Enters hand via carpal tunnel

Question 2

2 major branches that arise in the forearm

Answer 2

Anterior interosseous nerve

Palmar cutaneous nerve

Question 3

Termination of median nerve

Answer 3

Enters the hand and divides into:

Recurrent branch
Palmar digital branch

Question 4

Function of median nerve (directly)

Answer 4

Motor Innervation to superficial and intermediate anterior forearm:
Pronator teres
Flexor carpi radialis
Palmaris longus 
Flexor digitorum superficialis

Question 5

Function of anterior interosseus nerve

Answer 5

Motor Innervation to deep anterior forearm:
Flexor pollicis longus,
Pronator quadratus,
Lateral half of flexor digitorum profundus

Question 6

Function/course of palmar cutaneous nerve

Answer 6

Sensory Innervation to lateral aspect of palm

Doesn’t enter hand through carpal tunnel

Question 7

Function of recurrent branch

Answer 7

Motor Innervation to Thenar muscles

Question 8

Function of palmar digital branch

Answer 8

Motor Innervation of lateral 2 lumbricals 
Sensory Innervation (palmar digital cutaneous branch) of palmar surface and fingertips of lateral 3 and 1/2 fingers

Question 9

How is the median nerve damaged at elbow

Answer 9

Supracondylar fractures

Question 10

How is the median nerve damaged at the wrist

Answer 10

Lacerations just proximal to flexor retinaculum

Question 11

Consequences of damage to median nerve at elbow

Answer 11

Paralysis of (most) flexors and pronators in anterior forearm
Paralysis of flexor pollicis longus and Thenar muscles
Paralysis of lateral 2 lumbricals
Loss of sensation over lateral palm, palmar surface of 3 and 1/2 fingers and fingertips of lateral 3 and 1/2 fingers
Hand of benediction when trying to make a fist
Atrophy of Thenar muscles

Question 12

Consequences to damage to the median nerve at the wrist

Answer 12

Paralysis of Thenar muscles
Paralysis of lateral 2 lumbricals
Loss of sensation over lateral palm, palmar surface of 3 and 1/2 fingers and fingertips of lateral 3 and 1/2 fingers
Hand of benediction when trying to make a fist
Atrophy of Thenar muscles

Question 13

Spinal roots

Answer 13

C5-T1