Arteries of the Upper Limbs

The upper limbs get blood supply through the arteries arising from the subclavian artery.

These arteries initially run laterally between the clavicle and first rib and then enter the armpit.

The axillary artery is the continuation of the subclavian artery into the armpit. It travels through the axillary region and supplies blood to the chest wall and shoulder.

The axillary artery extends down into the arm, becoming the brachial artery.

It is the major supplier of blood to the arm and hand, and runs along the humerus on its medial aspect.

Immediately below the elbow, the brachial artery divides into the radial and ulnar arteries.

The radial artery supplies the lateral aspect of the forearm and hand. It is palpable at the wrist at which pulse is measured.

The ulnar artery provides blood to the medial aspect of the forearm.

Both the radial and ulnar arteries bifurcate into superficial and deep branches. These corresponding branches anastomose with each other, forming the palmar arches that supply the hand and fingers.