Arteries of the Upper Limb Flashcards
Where does the right subclavian artery arise
From the brachiocephalic trunk
Where does the left subclavian artery arise
Branches directly off the arch of aorta
When do the subclavian arteries become the axillary arteries
When they cross the lateral edge of the 1st rib and enter the axilla
Where does the axillary artery pass through in the axilla
Underneath pectoralis minor (enclosed in axillary sheath)
Where do the posterior and anterior circumflex humeral arteries arise
At the level of the humeral surgical neck
What is the course of the anterior and posterior circumflex arteries
Circle posteriorly around the humerus to supply shoulder region
What is the largest branch of the axillary artery
Subscapular artery
Where does the subscapular artery arise
At the level of the humeral surgical neck
Where does the axillary artery become the brachial artery
At the level of teres major
What is the main source of blood for the arm
Brachial artery
Where does the brachial artery give rise to the profunda brachii
Immediately distal to teres major
Where does profunda brachii travel
Along posterior surface of humerus in radial groove
Supplies structures in posterior aspect of arm
Terminates by contributing network of vessels at elbow joint
Where does the brachial artery travel
Descends down arm posterior to median nerve
Crosses cubital fossa underneath brachialis where it terminates by bifurcating into radial and ulnar arteries
What area does the radial artery supply
Posterior aspect of the forearm
What area does the ulnar artery supply
Anterior aspect of the forearm
Where does the ulnar artery and radial artery anastamose
Hand - superficial palmar arch and deep palmar arch
What portion of the hand is supplied by the radial artery
Contributes mainly to supply of thumb and lateral side of index finger
What portion of the hand is supplied by the ulnar artery
Contributes mainly to supply medial side of index finger and rest of digits
How does the ulnar artery move into the hand
Anteriorly to the flexor retinaculum and laterally to the ulnar nerve
Where do the common palmar digital arteries arise
From the superficial palmar arch
Where is the superficial palmar arch found
Anteriorly to flexor tendons of the hand
Deep to palmar aponeurosis
Where does the radial artery enter the hand
Dorsally, crossing the floor of the anatomical snuffbox
Turns medially and moves between heads of adductor pollicis
