Median nerve

Question 1

What does the median nerve do after leaving the axilla?

Answer 1

Descends down arm

Question 2

How does the median nerve descend down the arm?

Answer 2

Initially laterally to the brachial artery

About halfway down arm, becomes medial to brachial artery

Question 3

What does the median nerve do at the end of the arm?

Answer 3

Enters the cubital fossa

Question 4

What does the median nerve do at the end of the cubital fossa?

Answer 4

Enters the anterior forearm

between the two heads of pronator teres

Question 5

What does the median nerve do in the anterior forearm?

Answer 5

Travels between FDP and FDS

Gives off branches

Question 6

What branches does the median nerve give off in the anterior forearm?

Answer 6

Anterior interosseus branch

Palmar cutaneous nerve

Question 7

What does the median nerve do at the end of the forearm?

Answer 7

Enters the carpal tunnel

Question 8

What does the median nerve do in the carpal tunnel?

Answer 8

Divides into two branches

Question 9

What branches does the median nerve divide into in the carpal tunnel?

Answer 9

Recurrent branch

Palmar digital branch

Question 10

What are the motor functions of the median nerve?

Answer 10

Median nerve supplies

• pronator teres
• flexor carpi radialis
• palmaris longus

-FDS

Anterior interosseus branch supplies

• FDP lateral half!
• flexor pollicis longus
• pronator teres

Recurrent branch supplies

• flexor pollicis brevis
• abductor pollicis brevis
• opponens pollicis

Palmar digital branches supply
-lateral two lumbricals

Question 11

What are the sensory functions of the median nerve?

Answer 11

Gives off palmar cutaneous branch
-supplies lateral palm, including palmar surface of thumb
beneath lateral 3.5 fingers

Palmar digital branches

• supply palmar surace of lateral 3.5 fingers
• and dorsal surface of lateral 3.5 fingers up to DIP