A heart is conical in shape.it has four chamber. which r seperated from each other due to septum.it pumps the blood.he coronary arteries supply oxygen to the heart its blockage can lead to coronary heart disease like heart attack etc..its colour is red because it pumps the blood. it is enclosed and protected in the rib cage . its systole and diastole creates a pressure which pumps the blood..
(PLZ MARK IT AS BRAINLIEST)