The radial artery, a significant blood vessel in the forearm, plays a crucial role in the circulation system. Positioned alongside the radius bone, it derives its name from this association. Apart from providing blood supply to the forearm, hand, and fingers, its accessibility and proximity to the skin make it medically important.
The Ulnar Artery: A Vital Branch of the Brachial Artery
The brachial artery, which serves as the primary blood supply for the arm, originates in the vicinity of the axilla or armpit and extends all the way to the elbow. As it reaches the elbow, it divides into two crucial branches, namely the ulnar and radial arteries. Specifically, the ulnar artery is responsible for supplying blood to the medial side of the forearm.
Stretching from the elbow down to the thumb and further into the hand, the radial artery occupies the lateral side of the forearm. While the radial artery plays a significant role in maintaining blood flow to this region, it is the ulnar artery that deserves special attention due to its essential functions.
Three Segments of the Radial Artery
The radial artery plays a vital role in maintaining proper blood flow in the forearm. Its unique pathway starts at the inner elbow and extends towards the wrist. It then follows a winding route around the back of the hand, passing beneath the tendons responsible for thumb movement. Continuing its course, the radial artery passes between the metacarpal bones of the thumb and pointer finger before finally delving deep into the palm.