Arteries of the forearm: Anterior view (Latin)

Oxygenated blood reaches the elbow and forearm via the large a. brachialis, and its largest branch, the a. profunda brachii. Upon entering the fossa cubitalis the a. brachialis immediately divides into the two major arteries of the antebrachium: the a. ulnaris and a. radialis. Branches from the a. brachialis, a. ulnaris and a. radialis anastomose to form the rete articulare cubiti. Shortly after its origin, the a. ulnaris gives off the a. interossea communis, which further bifurcates into aa. interosseae anterior et posterior. The a. interossea anterior extends along the interosseous membrane of the forearm and gives off the a. comitans nervi mediani which accompanies the n. medianus to the hand. The a. ulnaris and a. radialis then descend through the forearm (antebrachium), giving off several rr. musculares along their lengths, terminating in the arterial arches of the hand.