Neurovascular structures of the hand

Question 1

What are the main arterial supply of the hand?

Answer 1

Deep and superficial palmar arch

Question 2

What forms the deep and superficial palmar arch?

Answer 2

Ulnar and radial artery

-Through their anastomoses

Question 3

What is the main contributor of the superficial palmar arch? (in most people)

Answer 3

Ulnar artery

Question 4

What is the main contributor of the deep palmar arch? (in most people)

Answer 4

Radial artery

Question 5

What is the arterial supply of the fingers of the hand?

Answer 5

Common palmar digital arteries

from the superficial palmar arch

Question 6

All of the intrinsic muscles of the hand are supplied by the ulnar nerve except for? LOAF

Answer 6

• Lumbricals
• Opponens pollicis
• Abductor pollicis brevis
• Flexor pollicis brevis

-They are supplied by the median nerve

Question 7

Which nerves innervate the palmar surface of the hand?

Answer 7

• Palmar cutaneous branch of the median nerve (thumb, index, middle and half of ring)
• Palmar cutaneous branch of the ulnar nerve (pinky and half of ring finger)

Question 8

Which nerves innervate the dorsal surface of the hand?

Answer 8

• Superficial branch of the radial nerve (thumb, index, middle and half of ring EXCEPT the fingertips)
• Dorsal branch of the ulnar nerve (pinky and half of ring finger)
• Palmar digital branch of the median nerve (thumb, index, middle and half of ring FINGERTIPS ONLY)