Upper Limb Nerves

Question 1

Musculocutaneous Nerve

Answer 1

C5-C7

Motor: Elbow Flexion

Sensory: Lateral Forearm

Brachial Plexus Injury

Question 2

Axillary Nerve

Answer 2

C5-C6

Motor: Shoulder Abduction (deltoid)

Sensory: Inferior deltoid

Humeral neck Fracture/Dislocation

Question 3

Radial Nerve

Answer 3

C5-C8

Motor: Extension of forearm, wrist, fingers + thumb

Sensory: Dorsal area between 1st and 2nd metarcarpals

Humeral Midshaft Fracture

Question 4

Median Nerve

Answer 4

C6, C8, T1

Motor: LOAF Muscles

• Lateral 2 lumbricals
• Opponens Pollis
• Abductor Pollis Brevis
• Flexor Polis brevis

Sensory:
- Palmar surface of lateral 3.5 fingers

carpal tunnel

Question 5

Ulnar Nerve

Answer 5

C8, T1

Motor: Hand muscles aside from LOAF

Sensory: Medial 1.5 fingers

Medial Epicondyle Fracture
(Claw Hand)

Question 6

Long Thoracic Nerve

Answer 6

C5-C7

Motor: Serratus Anterior

Sensory: N/A

Blow to Ribs or Mastectomy
(Winged Scapula)