Muscle that pumps blood through body Carries Oxygen rich blood from the left ventricle to the body Carries Oxygen poor blood from the right ventricle to lungs Trachea divides into 2 branches which enters the lungs Where gas exchange occurs (oxygen in, carbon dioxide out) Tiny hollow air sacs that make up the lungs. Chambers of the heart that receive blood from the artia and pump blood out to either the body (left) or the lungs (right)

Artery that carries nutrients and oxygen to the heart muscle cells. Chambers of the heart that receive blood from either the body (right) or the lungs (left) and pump blood to the ventricles. “Flaps” on the atria to increase the volume of the chamber Large vein that carries blood from the upper body to the right atrium Large vein that carries blood from the lower body to the right atrium Any blood vessel that carries blood Away Any blood vessel that carries blood to the heart

Pulmonary Arteries Superior vena cava Right Atrium Pulmonary Veins Right Ventricle From behind

Pulmonary Arteries Superior Vena Cava Right Atrium Left Atrium Rigth Ventricle Left Ventricle Coronary artery From the Front