Hand vessels and nerves

Question 1

arteries of the hand

Answer 1

1. radial

2. ulnar

Question 2

superficial palmar arterial arch

Answer 2

• ulnar artery = major contributor
• central compartment bt palmar aponeurosis and and long digital flexor tendons
• larger and more distal

Question 3

deep palmar arterial arch

Answer 3

• radial artery= major contributor
• located within adductor- innterosseous compartment on surface of metacarpal bones deep to long flexor tendons and adductor pollicis

Question 4

Radial artery

Answer 4

• gains dorsum of hand at anatomical snuff box
• passes between heads of 1st dorsal interosseous muscle
• crosses medially btw adductor pollicis heads
• anastomose with deep branch of ulnar artery to form deep palmar arterial arch

Question 5

Branches of radial artery

Answer 5

1. superficial palmar
2. dorsal carpal
3. princeps pollicis
4. radialis indicis

Question 6

superficial palmar branch of radial artery

Answer 6

• arises before artery goes to back of hand
• crosses thenar muscles
• passes superficial to digital flexor tendons
• anastomose with ulnar artery

Question 7

dorsal carpal branch of radial artery

Answer 7

• arises near anatomical snuff box
• deep to extensor tendons
• forms dorsal carpal arch by anastomosing with like branch on ulnar
• 3 dorsal metacarpal arteries branch from dorsal arch
• go to fingers to form dorsal digital arteries
• *1st dorsal metalcarpal- radial artery
• **5th dorsal metacarpal- ulnar artery

Question 8

Princeps pollicis

Answer 8

• arises from radial artery
• ascends to ulnar side of thumb
• divides into 2 branches
• distributes to palmar surface of thumb

Question 9

radialis indicis

Answer 9

• arises with princeps pollicis from radial artery

- supplies palmar side of index finger

Question 10

Branches from deep palmar arch

Answer 10

1. palmar metacarpal arteries
   - 3 arteries
   - 2, 3, 4 metacarpsl
   - anastomose with common palmar digital arteries from superficial branch
2. perforating arteries
   - connects dorsal metacarpal arteries with palmar metacarpal arteries

Question 11

Ulnar Artery

Answer 11

• crosses wrist lateral to pisiform and superficial to flexor retinaculum
• accompanies ulnar nerve
• deep palmar branch to anastomose with deep palmar arch
• forms superficial palmar arch and anastomose with superficial palmar branch from radial artery

Question 12

Branches of superficial palamar arch

Answer 12

1. common palmar digital arteries
   - 3 arteries
   - course on surface of long flexor tendons
   - anastomose with palmar metacarpal arteries of deep arch

Question 13

Proper digital arteries

Answer 13

• 2 to each finger
• formed of of short trunk of anastomoses with palamr metacarpal arteries from deep arch and common palmar digital arteries from superficial trunk
• 4 arteries supplied to each finger

Question 14

Median Nerve

Answer 14

• enters hand through carpal tunnel
• deep to palmar aponeurosis
• central compartment
• radial side of palmaris longs tendon

Question 15

Branches of medial nerve at hand

Answer 15

1. recurrent (motor) branch
2. common palmar digital nerve
3. palmar cutaneous branch

Question 16

Reccurent (motor) branches of median nerve

Answer 16

• arises directly from median nerve

- innervates thenar compartment

Question 17

Common palmar digital nerve branches of median nerve

Answer 17

• 3 nerves

- supply cutaneous innervation to thumb, 2nd, 3rd, and radial side of 4th digit via proper digital branches

Question 18

palmar cutaneous branch of median nerve

Answer 18

• proximal to flexor retinaculum
• descend superficial to flexor retinaculum
• innervates central palm

Question 19

Ulnar nerve

Answer 19

• enters hand with ulnar artery
• divides into superficial and deep branches
• also
• cutaneous palmar branch that started in forearm
• dorsal cutaneous branch

Question 20

superficial branch of ulnar nerve

Answer 20

• provides common and proper digital branches to 5th and ulnar side of 4th digit
• commentating branch between 3rd and 4th digit ulnar and median nerve

Question 21

Deep branch of ulnar nerve

Answer 21

• follow deep ulnar branch of artery (superficial to deep palmar arterial arch)
• innervates
  1. hypothenar muscles
  2, lumbricals 3 and 4
  3. all interossei
  4. adductor pollicis

Question 22

cutaneous palmar branch of ulnar nerve

Answer 22

• arises in forearm
• enters central palm
• innervates with cutaneous branch of medial nerve

Question 23

Dorsal cutaneous branch of ulnar nerve

Answer 23

• passes dorsally near styloid process
• divides into 3 dorsal digital nerve
• innervates skin on medial dorsum of hand, ulnar side 4th digit and entire 5th digit

Question 24

superficial branch of radial nerve

Answer 24

• hand is limited to superficial radial nerve
• has 2 branches:
  1. lateral branch
  2. medial branch

Question 25

medial branch of superficial radial nerve

Answer 25

- provdes 4 dorsal digital nerves - innervates lateral dorsum of hand, dorsum of ulnar side of thumb, dorsum of index finger, radial half go dorsum of middle finger * *distal portions are innervated by median nerve

Question 26

lateral branch of superficial radial nerve

Answer 26

- short course to radial side of thumb | - innervates thumb