Lecture 13 - Vessels and Nerves of the Forearm and Hand

Question 1

Define bifurcation

Answer 1

Splitting or dividing

Question 2

Brachial artery bifurcates into what?

Answer 2

Radial artery and ulnar artery

Question 3

Where does the bifurcation of the brachial artery occur?

Answer 3

Just distal to the cubital fossa

Question 4

The ulnar artery passes deep to _____ and can be relocated alongside the ______ nerve deep to which muscle?

Answer 4

FDS: Flexor Digitorum Superficialis
ulnar nerve
FCU: Flexor Carpi Ulnaris

Question 5

The ulnar artery passes _____ to the flexor retinaculum, between which bone(s)?

Answer 5

superficial

between pisiform and hook of hamate

Question 6

The deep branch of the ulnar artery anastomoses with what?

Answer 6

deep palmar arch

Question 7

Which artery continues as the superficial palmar arch in the hand?

Answer 7

Ulnar artery

Question 8

Where does the radial artery travel?

Answer 8

Travels in a groove between anterior forearm muscles and medial border of brachio-radialis

Question 9

Along which nerve can we find the radial artery?

Answer 9

Along the superficial branch of radial nerve

Question 10

Which muscles does the radial artery pierce to become the deep palmar arch?

Answer 10

the first dorsal interosseous muscle and adductor pollicis

Question 11

With what does the radial artery anastomose?

Answer 11

the deep branch of ulnar artery

Question 12

Which veins follow the arterial patterns?

Answer 12

Deep veins

Question 13

List the deep veins of the forearm and hand

Answer 13

• Deep venous palmar arch
• Superficial venous palmar arch
• Radial vein
• Ulnar vein
• Brachial vein

Question 14

List the superficial veins of the forearm and hand

Answer 14

Basilic vein

Cephalic vein

Question 15

The most medial structure in the cubital fossa is:

Answer 15

median nerve

Question 16

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

Answer 16

Median Nerve

Question 17

The median nerve courses through the forearm between _____ and _____

Answer 17

FDS and FDP

Question 18

Which nerve passes posterior to the medial epicondyle?

Answer 18

The ulnar nerve

Question 19

The ulnar nerve courses through the forearm deep to what?

Answer 19

Flexor carpi ulnaris

Question 20

What muscles does the ulnar nerve supply in the forearm?

Answer 20

FCU

Medial half of FDP

Question 21

Prior to bifurcation, the radial nerve supplies which muscle(s)?

Answer 21

• Brachioradialis

- ECRL

Question 22

Which muscle does the deep branch of the radial nerve pierce?

Answer 22

Supinator

Question 23

The deep branch of the radial nerve courses through the forearm at the posterior surface of the ____

Answer 23

Interosseous membrane

Question 24

The superficial branch of the radial nerve courses through the forearm deep to the ______ and becomes superficial at the _____

Answer 24

brachioradialis, anatomical snuff box

Question 25

What does the superficial branch of the radial nerve supply?

Answer 25

supplies skin on the posterior surface of the thumb

Question 26

List symptoms of the carpal tunnel syndrome

Answer 26

- inflammation of synovial sheaths surrounding tendons - fluid retention - infection

Question 27

What is the carpal tunnel syndrome caused by?

Answer 27

caused by anything that increases the size of the tendons passing through the carpal tunnel

Question 28

what is the recommended surgical procedure to treat the carpal tunnel syndrome?

Answer 28

the flexor retinaculum is partially or completely cut to release pressure

Question 29

the median nerve supplies the skin of the lateral 3.5 digits so the following can occur:

Answer 29

(i) paresthesia: tingling (ii) hypoesthesia: reduced sensation (iii) anaesthesia: absence of sensation (iv) reduced strength or function of thenar muscles

Question 30

This nerve gives branches to most muscles in the anterior forearm:

Answer 30

median nerve