Innervation Of Muscles Connecting Trunk To The Upper Extremity

Question 1

Latissimus Dorsi (C6-8)

Answer 1

Thoracodorsal Nerve

Question 2

Levator Scapulae (C4-5)

Answer 2

Dorsal Scapular nerve (sensory: direct branches of C3-4)

Question 3

Pectoralis Major (clavicular head C5-6; Sternocostal head C7-T1)

Answer 3

Medial & Lateral Pectoral Nerves

Question 4

Pectoralis Minor (C5-T1)

Answer 4

Medial & lateral pectoral nerves

Question 5

Rhomboids (C4-5)

Answer 5

Dorsal Scapular nerve (sensory: direct branches of C3-4)

Question 6

Serratus Anterior (C5-7)

Answer 6

Long thoracic nerve

Question 7

Subclavius (C5-6)

Answer 7

Subclavian nerve)

Question 8

Trapezius (Accessory n [CNX1] motor; C3-4 sensory)

Answer 8

Innervation - accessory nerve CN X1; motor & C3-4 Sensory