Nerve Roots Upper

Question 1

Dorsal scapular n

Answer 1

• Innervates: Lev scap, rhomboid major & minor
• Nerve root: C5

Question 2

Long thoracic n

Answer 2

• Innervates: serratus anterior
• Nerve root: C5-C7

Question 3

Suprascapular n

Answer 3

• Innervates: supraspinatus & infraspinatus
• Nerve root: C5-C6

Question 4

Lateral & medial pectoral n

Answer 4

• Innervates: Pec major, minor
• Nerve root: lat (C5-C7) med (C8-T1)

Question 5

Upper & lower subscapular n

Answer 5

• Innervates: subscapularis, teres major (lower only)
• Nerve root: C5-C7

Question 6

Thoracodorsal n

Answer 6

• Innervates: latissimus dorsi
• Nerve root: C6-C8

Question 7

Musculocutaneous n

Answer 7

• Innervates: biceps brachii, brachialis, coracobrachialis
• Nerve root: C5-C6

Question 8

Axillary n

Answer 8

• Innervates: deltoid, teres minor
• Nerve root: C5-C6

Question 9

Radial n

Answer 9

• Innervates: triceps brachii, anconeus, brachioradialis, extensor carpi radialis longus
• PIN innervation: ECRB, supinator, ED, EDM, EI, EPL, EPB, AbdPL, ECU
• Nerve root: C5-T1

Question 10

Median n

Answer 10

• Innervates: pronator teres, FCR, palmaris longus, FDS,
• AIN innervation: FPL, medial 2/3 of FDP, pronator quadratus
• Nerve root: C5-T1

Question 11

Ulnar n

Answer 11

• Innervates: flexor carpi ulnaris, lateral 1/3 of FDP, intrinsic muscles of the hand
• Nerve root: C7-T1