The radial artery is a major blood vessel in the forearm that supplies oxygenated blood to the hand and wrist. It branches off from the brachial artery, which is located in the upper arm. The radial artery runs along the thumb side of the forearm and is commonly used for measuring pulse rates. In addition to its role in circulation, the radial artery is often used in medical procedures, such as arterial blood gas sampling and catheterization. Its location makes it accessible for healthcare professionals to monitor blood flow and assess cardiovascular health.