Week 6 - brachial plexus - cords

Question 1

Terminal branches of BP off cords

Answer 1

Musculocutaneous (lateral cord)
Median (lateral and medial root off L. cord, M. cord)
Ulnar (medial cord)
Axillary & radial (posterior cord)

Question 2

Musculocutaneous innervates

Motor & Sensory

Answer 2

Motor - Biceps Brachii, Corocobrachialis & Brachialis

Sensory - lateral forearm

Question 3

Axillary innervates

Answer 3

Teres minor & deltoids

Question 4

Radial innervates

Answer 4

Triceps, brachioradialis & extensor carpi radialis longus

Question 5

Median innervates

Answer 5

Flexor muscles in forearm

Question 6

Ulnar innervates

Answer 6

Intrinsic muscles of hand

Question 7

Nerves from lateral cord

Answer 7

Lateral pectoral (C5-7)

Question 8

Nerves from medial cord

Answer 8

Medial pectoral (C8,T1), Medial Cutaneous Arm, Medial Cutaneous Forearm

Question 9

Nerve from posterior cord

Answer 9

Upper Sub scap, Lower sub scap, thoracodorsal