vasculature of upper limb

Question 1

where does the right subclavian artery originate from?

Answer 1

the brachiocephalic trunk

Question 2

where does the left subclavian artery originate from?

Answer 2

arch of aorta

Question 3

what is the route of the vertebral artery?

Answer 3

goes through the transverse foramina of C6-C1
passthrough foramen magnum
unites with other vertebral artery to form basilar artery

Question 4

where does the subclavian artery become the axillary artery?

Answer 4

the lateral border of the first rib

Question 5

where does the axillary artery become the brachial artery?

Answer 5

at the inferior border of teres major

Question 6

what are the main branches of the brachial artery

Answer 6

profunda brachii
superior ulnar collateral artery
inferior ulnar collateral artery

Question 7

what does the brachial artery bifurcate into?

Answer 7

the radial and ulnar arteries

Question 8

how is blood flow ensured to the forearm even if elbow is fully flexed?

Answer 8

Peri-articular anastamoses = network of anastomoses of brachial and profound brachia arteries in the arm with radial and ulnar arteries in the forearm
ensures blood flow to the forearm even if elbow is fully flexed

Question 9

what does the radial artery supply?

Answer 9

supplies the anterolateral aspect of the forearm including flexors and extensors

Question 10

what does the ulnar artery supply?

Answer 10

medial side of forearm mainly flexors and pronators - gives off common interosseous artery near its origin

Question 11

where do you palpate the axillary artery?

Answer 11

against the humerus

Question 12

which pulse do you palpate in the cubital fossa?

Answer 12

the brachial pulse

Question 13

where do you palpate radial and ulnar pulse?

Answer 13

at the wrist
radial - by thumb
ulnar - by pinky

Question 14

which artery can be palpated in the anatomical snuff box?

Answer 14

the radial artery

Question 15

what is the venous drainage of the hand?

Answer 15

the dorsal venous arch - which receives blood from the digits

Question 16

where does the dorsal venous arch drain?

Answer 16

into the cephalic and basilica vein

Question 17

where does the cephalic vein run?

Answer 17

along the lateral side of the forearm and drains into axillary vein

Question 18

where does the basilic vein drain?

Answer 18

along medial side of forearm
- receives median cubital vein drainage
it joins with the deep veins to form the axillary vein

Question 19

what forms the axillary vein?

Answer 19

the union of basilica vein and brachial venue comitantes

Question 20

when does the axillary vein become the subclavian vein

Answer 20

after it passes under the clavicle

Question 21

where does the subclavian vein drain?

Answer 21

into the internal jugular into form brachiocephalic veins which join and form the vena cava