Innervations of Muscles in the Forelimb

Question 1

What muscles are innervated by the cranial pectoral nerve?

Answer 1

Superficial/Cranial Pectorals (descending and transverse pectorals

Question 2

What muscle(s) is innervated by the caudal pectoral nerve?

Answer 2

Deep Pectoral (ascending pectoral)

Question 3

What muscles are innervated by the accessory nerve? (4)

Answer 3

Brachiocephalicus
Omotransversarius
Sternocephalicus
Trapezius

Question 4

Cervical Spinal Nerves (4)

Answer 4

Sternohyoideus
Sternothyroideus
Serratus ventralis
Rhomboideus* (also innervated by thoracic spinal nerves)

Question 5

Thoracodorsal nerve

Answer 5

Latissimus dorsi

Question 6

Axillary nerve (3)

Answer 6

Deltoideus
Teres major
Teres minor

Question 7

Subscapular nerve

Answer 7

Subscapularis

Question 8

Musculocutaneous nerve (3)

Answer 8

Biceps brachii
Brachialis
Coracobrachialis

Question 9

Radial nerve (9)

Answer 9

Tensor fasciae
Triceps (all heads)
Anconeus
Supinator
Extensor carpi radialis
Common digital extensor
Lateral digital extensor
Ulnaris lateralis
Abductor digiti I longus

Question 10

Median nerve (5)

Answer 10

Flexor carpi radialis
Deep digital flexor (Humeral and radial head)
Superficial digital flexor
Pronator teres
Pronator quadratus

Question 11

Ulnar nerve (2)

Answer 11

Flexor carpi ulnaris
Deep digital flexor (ulnar head)