Tunica intima: The inner layer keeps your blood flowing smoothly.What is the brachial artery made of?Īll the arteries in your body contain three layers: They go on to supply the forearm, wrist, hand and fingers with oxygenated blood. The terminal, or ending, branches of the brachial artery are the ulnar and radial arteries. It helps supply the biceps and brachialis muscles. Inferior ulnar collateral artery: The third branch of the brachial artery starts near the bottom of your humerus.It runs alongside the ulnar nerve near the elbow. It supplies blood to your triceps and part of your elbow and elbow joint. Superior ulnar collateral artery: The second branch may come off of the main brachial artery or the deep brachial artery branch.It supplies blood to parts of your humerus bone (long bone in your upper arm), deltoid muscle (rounded part of your shoulder) and triceps muscle (back of your upper arm). Deep brachial artery: Also called the profunda brachii artery, this is the first and main branch of the brachial artery.The brachial artery contains several branches. The brachial artery runs parallel to the median nerve, which is the main nerve for your forearm. From there it divides into the ulnar and radial arteries in your forearm. It ends at the cubital fossa (the indentation between your upper and lower arm, at the front of your elbow). It’s a continuation of the axillary artery in your armpit and shoulder. The brachial artery runs along the front part of your bicep. If your legs aren’t getting enough blood flow, it could be a sign of peripheral artery disease (PAD). This test compares the blood pressure from your brachial artery to an artery in your ankle. Your provider may also use a test called an ankle-brachial index (ABI). This minimally invasive technique allows your provider to address problems such as blood clots, aneurysms or narrowed arteries without major open-heart surgery. Using imaging guidance, they thread it up to blood vessels near your heart. ![]() Your healthcare provider may insert a catheter (thin-flexible) tube into your brachial artery. The brachial artery is an important access point for interventional radiology procedures. How is the brachial artery used for tests and procedures? The brachial artery, like all other arteries in your body, carries oxygen-rich blood away from your heart. The bones, soft tissues and nerves in your arm need the oxygen and nutrients in your blood to function and repair themselves. Triceps brachii muscles, or just triceps. ![]()
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