KIN 100 - Vessels and Nerves of the Forearm and Hand (lecture 13)

Question 1

What does the brachial artery bifurcate into

Answer 1

the radial and ulnar arteries just distal to the cubital fossa

Question 2

What does the ulnar artery pass deep to

Answer 2

deep to flexor digitorum superficialis

Question 3

What does the ulnar artery locate alongside with

Answer 3

the ulnar nerve, which is deep to flexor carpi ulnaris

Question 4

What does the ulnar artery pass superficially to

Answer 4

the flexor retinaculum, between pisiform and hook of hamate

Question 5

What does the ulnar artery continue as in the hand

Answer 5

the superficial palmar arch

Question 6

Where does the radial artery travel in

Answer 6

travels in a groove between the anterior forearm muscles and the medial border of brachioradialis

Question 7

What does the radial artery pierce

Answer 7

the first dorsal interosseous muscle and adductor policis to become the deep palmar arch

Question 8

What does the deep branch of the ulnar artery anatomises with

Answer 8

the deep palmar arch

Question 9

What does the radial artery anastomoses with

Answer 9

the deep branch of the ulnar artery

Question 10

What are the 5 deep veins

Answer 10

1. Deep venous palmar arch
2. Superficial venous palmar arch
3. Radial vein
4. Ulnar vein
5. Brachial vein

Question 11

What are the two superficial veins

Answer 11

1. Basilic veins
2. Cephalic vein

Question 12

What does the median nerve in the forearm travel through

Answer 12

travel through the forearm between flexor digitorum superficialis and flexor digitorum profundus

Question 13

What structure does the median nerve pass deep through

Answer 13

passes deep to the flexor retinaculum, passing through the carpal tunnel

Question 14

Where does the ulnar nerve pass posterior to

Answer 14

the medial epicondyle

Question 15

What does the ulnar nerve pass through

Answer 15

pass through the forearm deep to flexor carpi ulnaris

Question 16

What muscles does the ulnar nerve give branch to

Answer 16

• flexor carpi ulnaris
• medial half of flexor digitorum profundus

Question 17

What does the median nerve give branch to

Answer 17

most muscles in the anterior forearm

Question 18

How does the ulnar nerve travel in relation to the flexor retinaculum

Answer 18

passes superficial to the flexor retinaculum
- does not pass through the carpal tunnel

Question 19

Where does the radial nerve bifurcate

Answer 19

near the lateral epicondyle

Question 20

What does the radial nerve pierce through

Answer 20

pierces the supinator and courses through the forearm on the posterior surface of the interosseous membrane

Question 21

What causes carpal tunnel syndrome and what are its other effects

Answer 21

caused by anything that increases the size of the tendons passing through the carpal tunnel
- Inflammation of synovial sheaths surrounding tendons
- Fluid retention
- Infection

Question 22

What symptoms arise when the median nerve is affected by carpal tunnel syndrome

Answer 22

• Paresthesia (tingling)
• Hypoesthesia (reduced sensation)
• Anesthesia (absence of sensation)
• Reduced strength or function of thenar muscles

Question 23

Where does the ulnar artery originate

Answer 23

from the bifurcation of the brachial artery just distal to cubital fossa

Question 24

Where does the radial artery originate

Answer 24

from the bifurcation of the brachial artery just distal to the cubital fossa