5 Vasculature of the upper limb Flashcards
Where do the vertebral arteries pass through?
Transverse foramina of C6-C1.
Foramen magnum.
What is subclavian steal syndrome?
Occlusion of subclavian artery proximal to vertebral artery. results in reversed flow in ipsilateral vertebral artery. Often due to atherosclerosis. Blood stolen from vertebrobasilar system.
When does the subclavian artery become the axillary artery and which muscle is it divided into thirds by?
Lateral border of the first rib.
Pectoralis minor.
When does the axillary artery become the brachial artery?
Inferior border of teres major.
What are the three main branches of the brachial artery?
Profunda brachii.
Superior and inferior ulnar collateral arteries.
What runs in the radial groove?
Radial nerve and profunda brachii.
Where does the profound brachia supply?
Posterior compartment of the arm.
What does the degree of ischaemia after a brachial artery injury depend on?
Proximal or distal to profunda brachii.
Proximal is more serious
What does the radial artery supply?
Anterolateral forearm.
What does the ulnar artery supply?
How?
Medial compartment.
Gives off common interrosseous trunk which divides into anterior and posterior interosseous artery.
Which test is used to check the collateral blood supply to the lateral hand?
Allen’s.
Where is the brachial pulse palpated?
Cleft between biceps brachii and triceps brachia in mid arm.
Where is the radial pulse palpated?
Lateral to tendon of flexor carpi radialis.
In the anatomical snuffbox.
How is the venous dorsal arch of the hand drained?
Cephalic vein drains lateral side.
Basilic vein drains medial side.
Which vein runs through the deltopectoral triangle?
Cephalic vein.
