Forelimb Nerves

Question 1

Suprascapular nerve

Answer 1

Motor: Supraspinatus m., infraspinatus m.
Sensory: None

Question 2

Subscapular nerve

Answer 2

Motor: Subscapular m.
Sensory: None

Question 3

Long thoracic nerve

Answer 3

Motor: Serratus ventralis m.
Sensory: None

Question 4

Thoracodorsal nerve

Answer 4

Motor: Latissimus dorsi m.
Sensory: None

Question 5

Axillary nerve

Answer 5

Motor: Deltoideus mm., teres major m., teres minor m.
Sensory: Cranial arm and forearm

Question 6

Radial nerve

Answer 6

C7, C8, T1, T2
Motor: Triceps mm., anconeus m., tensor fascia antibrachii m., extensor carpi radialis m., common digital extensor m., lateral digital extensor m., ulnaris lateralis m., supinator m., abductor pollicis longus m.
Sensory: Cutaneous branch sensory to craniolateral forearm in all species and dorsal manus in all but the horse

Question 7

Median nerve

Answer 7

C8, T1, T2
Motor: Superficial digital flexor m., deep digital flexor m. (humeral, ulnar, and radial heads), flexor carpi radialis, pronator quadratus
Sensory: Skin of caudal antebrachium and palmar paw

Question 8

Ulnar nerve

Answer 8

C8, T1, T2
Motor: Pronator teres m., flexor carpi ulnaris m., (ulnar and humeral heads), deep digital flexor m. (ulnar and humeral heads)
Sensory: Skin of distomedial brachium and caudal antebrachium, skin of palmar paw, including skin of lateral metacarpal of fifth digit

Question 9

Musculocutaneous nerve

Answer 9

C6, C7, C8
Motor: Brachialis m., coracobrachialis m., biceps brachii m.
Sensory: Skin of medial limb (in equines down to fetlock)

Question 10

Plexus

Answer 10

C6, C7, C8, T1, T2