Peripheral arteries are blood vessels that carry oxygen-rich blood from the heart to the limbs, particularly the arms and legs. They are part of the peripheral vascular system, which includes all blood vessels outside the heart and brain. These arteries branch off from larger arteries, such as the aorta, and help supply essential nutrients and oxygen to tissues. When peripheral arteries become narrowed or blocked, a condition known as peripheral artery disease (PAD) can occur. This can lead to reduced blood flow, causing symptoms like pain or cramping in the legs during physical activity. Maintaining healthy peripheral arteries is crucial for overall circulation and limb health.