Heart is a main part of circulatory system.it is made of thick muscular tissue.it is divided into four chambers. -left atria /left auricle
-right auricle/right atria
The valves present in between auricles and ventricles are known as auriculoventricular valves.
Blood vessels which supply the blood to heart are known as the CORONARY VESSELS. The largest blood vessel which supply /pump blood to different parts of body is known as the AORTA.VENA CAVA transports deoxigenated blood to heart.