Nerves of the carnivoran manus (L7)

Question 1

Radial n.- O

Answer 1

C7-T1

Question 2

Radial n.- N

Answer 2

None in manus

Question 3

Radial n.- A/P in canine

Answer 3

• Superficial radial branches into medial and lateral dorsal branches
• Sensory to dorsum of manus

Question 4

Median n.- O

Answer 4

C8-T1

Question 5

Median n.- N

Answer 5

Muscles moving digit 1

Question 6

Median n.- A/P in canine

Answer 6

• Enters manus through carpal canal
• Innervates several small muscles in the manus- those of digit 1
• Gives off sensory digital branches to most of palm

Question 7

Ulnar n.- O

Answer 7

C8-T2

Question 8

Ulnar n.- N

Answer 8

Interosseous mm., muscles of digit V, lumbricals

Question 9

Ulnar n.- A/P in canine

Answer 9

• Splits into dorsal (sensory only) and lateral (both) branches in distal antebrachium
• Supplies most muscles of manus

Question 10

If a dog stepped on a thorn and yelps, which nerve is it hitting?

Answer 10

Median n.