UPPER LIMB: Blood Supply and Sensory Innervation

Question 1

BRACHIAL ARTERY

Answer 1

Continuation of Axillary Artery
- Inferior border Teres Major to Cubital fossa
BRANCHES:
~ Muscular branches
~ Deep artery of arm
~ Superior/ Inferior Ulnar collateral
~ Terminates as RADIAL and ULNAR artery

Question 2

ULNAR ARTERY

Answer 2

~ Common interosseous
~ Anterior /Posterior interosseous
~ Anastomotic branches
~ Anterior/ Posterior Ulnar recurrent collateral

Question 3

RADIAL ARTERY

Answer 3

~ Muscular branches
~ Anastomotic branches
~ Radial recurrent artery

Question 4

PALMAR ARTERIES

Answer 4

SUPERFICIAL Palmar Arch:
~ Joining of ulnar and radial arteries
- Mainly ulnar artery
DEEP Palmar Arch:
~ Joining uInar and radial arteries
- Mainly radial artery

Question 5

PALMAR DIGITAL ARTERIES

Answer 5

SUPERFICIAL Palmar Arch:
- Common Palmar Digital Arteries
- Proper Palmar Digital Arteries
- Palmar Digital Artery medial side little finger
DEEP Palmar Arch:
- Palmar Metacarpal Arteries
- Radialis Indicis Artery (index)
- Princeps Pollicis Artery (thumb)

Question 6

DORSAL DIGITAL ARTERIES

Answer 6

Formed by Dorsal branches of radial and ulnar arteries
Dorsal metacarpal arteries terminate as dorsal digital arteries

Question 7

BASILIC VEIN

Answer 7

1. Ascends Medially on Posterior forearm surface
2. Medially on Anterior arm surface
3. Pierces deep fascia of arm
4. Become Axillary Vein

Question 8

CEPHALIC VEIN

Answer 8

1. Ascends Laterally on Posterior forearm surface
2. Medially on Anterior arm surface
3. Disappears through deltopectoral triangle
4. Drains into Subclavian Vein

Question 9

SUPERFICIAL VEINS

Answer 9

Cephalic+ Basilic = Median Cubital Vein
(at Cubital fossa)

Question 10

DEEP VEINS

Answer 10

• Radial and Ulnar Veins
• Brachial Vein
• Axillary Vein
• Subclavian Vein

Question 11

MEDIAN NERVE

Answer 11

Anterior Interosseous Nerve in Cubital fossa
INNERVATE:
~ Flexor Pollicis Longus
~ Lateral half Flexor Digitorum Profundus
~ Pronator Quadratus
Enter palm via Carpal Tunnel
- Thenar group and Lateral 2 Lumbricals
- Skin of Lateral 3 1/2 fingers

Question 12

ULNAR NERVE

Answer 12

Over flexor retinaculum
SUPERFICIAL branch:
~ Skin on Medial 1 1/2 fingers
DEEP branch:
~ Hypothenar group
~ 2 Medial Lumbricals
~ ALL Interossei muscles
~ Adductor Pollicis

Question 13

RADIAL NERVE

Answer 13

SUPERFICIAL branch:
~ Lateral 3 1/2 of Dorsum
DEEP branch: (Posterior Interosseous Nerve)
~ Extensor Carpi Radialis Brevis
~ Supinator
~ Extensor Digitorum
~ Extensor Digiti Minimi
~ Extensor Carpi Ulnaris
~ Extensor Pollicis Longus and Brevis
~ Extensor Indicis