Nerves of the Upper Limb

Question 1

What rami supply the brachial plexus

Answer 1

the anterior rami of C5-8 and T1

Question 2

What is the pattern of the brachial plexus

Answer 2

Roots - Trunks - Divisions - Cords - Branches/Nerves

Question 3

Where does the musculocutaneous branch supply

Answer 3

the arm, anterior compartment muscles (motor)

lateral cutaneous nerve of the forearm (sensory)

Question 4

Where does the medican branch supply

Answer 4

forearm, anterior compartment muscles, hand, thenar muscles (motor) and 1/2 skin of the palm (sensory)

Question 5

ulnar branch

Answer 5

Forearm, 1 1/2 muscles, hand, small muscles (motor) and 1/2 skin of the hand (sensory)

Question 6

where does the radial branch supply

Answer 6

arm, posterior compartment muscles (motor)

forearm, posteolateral skin and hand, dorsal skin (sensory)

Question 7

Where does the axillary branch supply

Answer 7

deltoid and teres minor muscles (motor)

skin of the supra-lateral arm (sensory)

Question 8

Upper BP Injuries (Erb’s palsy)

Answer 8

– Roots C5, 6

– Waiters Tip

Question 9

Lower BP Injuries (Klumpkey’s palsy)

Answer 9

– Roots C8, T1

– Ulnar Claw – intrinsic hand muscles