(Circulatory) Brings oxygen rich blood fromt he left ventricle to the rest of the body.
(Circulatory) Muscular upper body chamber of the heart. Right: Where deoxygenated blood enters from the vena cava. Left: Where oxygenated blood enters from the pulmonary veins.
(Excretory) End of the digestive tract, where feces is excreted from the body.
(Circulatory) Anterior surface of the atrium. It is a pouch like structure that expands the volume of the atria.
(Nervous) In charge of all the functions your body needs to stay alive, automatic activities like breathing, digestion, and circulating blood.