The upper limb - nerves

Question 1

What are the 3 main nerves for the upper limb?

Answer 1

Radial
Ulnar
Median

Question 2

What is the route for the radial nerve?

Answer 2

Travels anterior to the lateral epiondyle in the posterior forearm, divides into a deep branch (motor) and a superficial branch (sensory)

Question 3

What is the route for the ulnar nerve?

Answer 3

Descends medically at humerus, passes posterior to elbow, travels deep into muscles alongside ulnar, divides into several branches.

Question 4

What is the route for the median nerve?

Answer 4

Descends medically at the humerus, enters anterior compartment of forearm between heads of pronator teres. Travels down and enters hand through carpal tunnel

Question 5

What does the ulnar nerve innervate?

Answer 5

2 forearm muscles
majority of hand muscles
sensation of little finger

Question 6

What does the median nerve innervate?

Answer 6

Flexor and pronator
Thenar muscles
sensation of palm, index and middle finger