Week 1 Peripheral & Spinal Nerve Muscle Innervation: Back, Scapular and Pectoral Regions

Question 1

Latissimus Dorsi

Answer 1

Thoracodorsal nerve (C6-C8)

Question 2

Levator Scapulae

Answer 2

Motor: Dorsal Scapular Nerve (C4-C5)
Sensory: direct spinal branches C3-C4

Question 3

Pectoralis Major

Answer 3

Lateral pectoral nerve (Clavicular head) and Medial Pectoral Nerve (Sternocostal head)
(Clavicular Head (C5-C7)
(Sternocostal head (C8-T1)

Question 4

Rhomboids

Answer 4

Dorsal Scapular Nerve (C4-C5)
Sensory: Direct Branches C3-C4

Question 5

Pectoralis Minor

Answer 5

Medial and Lateral Pectoral Nerves (C5-T1)

Question 6

Serratus Anterior

Answer 6

Long thoracic nerve (C5-C7)

Question 6

Subclavius

Answer 6

Subclavian nerve (C5-C6)

Question 7

Trapezius

Answer 7

Motor: Accessory nerve (CN XI)
Sensory: C3-C4

Question 8

Deltoid

Answer 8

Axillary Nerve (C5-C6)

Question 9

Supraspinatus

Answer 9

Suprascapular Nerve (C4-C6)

Question 10

Teres minor

Answer 10

Axillary Nerve (C5-C6)

Question 10

Infraspinatus

Answer 10

Suprascapular Nerve (C5-C6)

Question 11

Subscapuaris

Answer 11

Upper and lower subscapular nerves (C5-C6)

Question 12

Teres Major

Answer 12

Lower subscapular nerve (C5-C6)