The mitral valve is a crucial component of the heart, located between the left atrium and the left ventricle. Its primary function is to ensure that blood flows in one direction, preventing backflow as the heart pumps. The valve opens to allow oxygen-rich blood to enter the left ventricle and closes to keep it from returning to the atrium. This valve is named for its resemblance to a bishop's miter, a type of hat. It consists of two flaps, or leaflets, that work together to maintain proper blood flow. Proper functioning of the mitral valve is essential for overall heart health.