The Deep Palmar arch is a branch of which artery?

The correct answer is that the Deep Palmar arch is a branch of the ulnar artery. The Deep Palmar arch forms one of the two main vascular supplies to the palm of the hand, with the other being the Superficial Palmar arch. The ulnar artery, which is one of the two major arteries that supply the forearm and hand, primarily contributes to the formation of the Deep Palmar arch.

The ulnar artery primarily provides blood to the medial aspect of the hand. It runs alongside the ulnar bone and enters the hand, where it gives rise to the Deep Palmar arch, which then supplies the deep structures of the palm, including the muscles, tendons, and deeper areas of the hand.

In contrast, the radial artery also contributes to the blood supply of the hand but mainly forms the Superficial Palmar arch. The brachial artery is the main artery of the upper arm, dividing into the radial and ulnar arteries but is not directly involved in the formation of the Deep Palmar arch. The subclavian artery supplies the upper limb but does not branch into the hand directly. Therefore, understanding the vascular anatomy and the roles of these arteries clarifies why the uln