Brachial Plexus

Question 1

Roots

Answer 1

Dorsal Scapular Nerve: C5

Long Thoracic Nerve: C5,C6,C7

Question 2

Trunk

Answer 2

Suprascapular Nerve: C5,C6

Nerve to Subclavius: C5,C6

Question 3

Lateral Cord

Answer 3

Lateral Pectoral Nerve: C5, C6, C7

Musculocutaneous Nerve: C5,C6,C7

Lateral Cutaneous Nerve of forearm

Lateral root of median Nerve: C5, C6, C7

Question 4

Posterior Cord

Answer 4

Upper Subscapular Nerve: C5,C6

Thoracodorsal Nerve: C6,C7,C8

Lower Subscapular Nerve; C5,C6

Axillary Nerve: C5,C6

Radial Nerve C5,C6,C7,C8,T1

Question 5

Medial Cord

Answer 5

Medial Pectoral Nerve: C8,T1

Ulnar Nerve: C8,T1

Medial cutaneous nerve of arm, joined by intercostal brachial nerve from 2nd intercostal nerve: C8,T1,T2

Medial cutaneous nerve of forearm: C8,T1

Medial root of median nerve (with lateral root) forms median nerve: C5,C6,C7,C8,T1

Question 6

Dorsal Scapular Nerve

Answer 6

• Rhomboid Minor
• Rhomboid Major
• Levator Scapulae

Question 7

Long Thoracic Nerve

Answer 7

-Serratus Anterior

Question 8

Suprascapular nerve

Answer 8

• Supraspinatus

- Infraspinatus

Question 9

Nerve to Subclavius

Answer 9

-Subclavius

Question 10

Lateral Pectoral Nerve

Answer 10

-Pectoralis Major

Question 11

Musculocutaneous Nerve

Answer 11

• Biceps Brachii
• Brachialis
• Coracobrachialis

Question 12

Upper Subscapular Nerve

Answer 12

-Subscapularis

Question 13

Thoracodorsal Nerve

Answer 13

-Latissimus Dorsi

Question 14

Lower Subscapular Nerve

Answer 14

• Subscapularis

- Teres Major

Question 15

Axillary Nerve

Answer 15

• Deltoids
• Teres Minor
• Upper Lateral cutaneous nerve of arm (supplies skin over lower half of deltoid)

Question 16

Radial Nerve (part 1)

Answer 16

• Triceps
• Part of Brachialis
• Posterior cutaneous nerve of arm
• Lower lateral cutaneous nerve of arm
• Posterior cutaneous nerve of forearm
• Brachioradialis
• Extensor carpi radialis longus

Question 17

Radial Nerve (part 2/Extensor muscles of forearm)

Answer 17

• Supinator
• Extensor carpi radialis brevis
• Extensor Carpi Ulnaris
• Extensor Digitorum
• Extensor Digiti minimi
• Extensor indicis
• Abductor pollicis Longus
• Extensor pollicis longus
• Extensor pollicis brevis
• Skin on side of dorsum of hand and dorsal surface of lateral 3 and a half fingers
• Articular branches to elbow, wrist, and hand

Question 18

Medial Pectoral Nerve

Answer 18

-Pectoralis Major and Minor

Question 19

Medial Cutaneous nerve of arm joined by intercostal brachial nerve from 2nd intercostal

Answer 19

-Skin of medial side of arm

Question 20

Medial Cutaneous nerve of forearm

Answer 20

-Skin of medial side of forearm

Question 21

Median Nerve (part 1)

Answer 21

• Pronator Teres
• Flexor carpi radialis
• Palmaris Longus
• Flexor digitorum superficialis
• Abductor pollicis brevis
• Flexor pollicis brevis
• Opponens pollicis
• First two lumbricals
• Flexor pollicis longus
• Flexor Digitorum profundus (lateral half)
• Pronator Quadratus

Question 22

Median Nerve (part 2)

Answer 22

-Palmar cutaneous branch to lateral half of palm and digital branches to palmar surface of lateral 3 1/2 fingers, articular branches to elbow, wrist, and carpal jt.s

Question 23

Ulnar Nerve

Answer 23

• Flexor carpi ulnaris
• Medial half of flexor digitorum profundus
• Flexor digiti minimi
• Opponens digiti minimi
• Abductor digiti minimi
• Adductor pollicis
• 3rd/4th lumbricals
• Interossei
• Palmaris brevis
• Skin of medial half of dorsum of hand and palm
• Skin of palm and dorsal surface of medial 1 1/2 fingers