The heart is an organ that makes the circulatory system together with other structures such as the blood vessels. The heart pumps the blood through the blood vessels. In mammals, the left ventricles are thicker than the right ventricle, to generate more pressure since th...
openingis guarded by the mitral, or bicuspid, valve, so named because it consists of two flaps. The mitral valve is attached in the same manner as the tricuspid, but it is stronger and thicker because the left ventricle is by nature a more powerful pump working under high pressure. What ...