Innervation - Upper Limb

Question 1

Posterior cord branches

Answer 1

• Axillary n.
• Radial n.
• Upper (superior) subscapular n.
• Lower (inferior) subscapular n.
• Thoracodorsal n.

Question 2

Lateral cord branches

Answer 2

• Lateral pectoral n. (also known as the lateral anterior thoracic n.)
• Musculocutaneous n.
• Lateral head of median n.

Question 3

Medial cord branches

Answer 3

• Medial head of median n.
• Ulnar n.
• Medial cutaneous n. of the forearm (medial antebrachial cutaneous n.)
• Medial brachial cutaneous n. (lesser internal cutaneous n.; medial cutaneous n. of the arm)
• Medial pectoral n. (also known as the medial anterior thoracic n.)