EVERYDAY SCIENCE

Detailed explanation-1: -If the valve becomes narrowed, it is harder for the blood to flow through, and often the blood leaks backward. Symptoms usually don’t until the adult years. With this defect, the mitral valve leaflets bulge and don’t close properly during the contraction of the heart. This lets blood to leak backward.

Detailed explanation-2: -When the mitral valve doesn’t close all the way, blood flows backward into the upper heart chamber (atrium) from the lower chamber as it contracts. This cuts down on the amount of blood that flows to the rest of the body. As a result, the heart may try to pump harder. This may lead to congestive heart failure.

Detailed explanation-3: -If the valve doesn’t open fully, it will block or restrict the flow of blood. This is called valve stenosis or valve narrowing. If the valve doesn’t close fully, the blood will leak back into the heart instead of forwards into the body.

Detailed explanation-4: -Regurgitation, also known as backflow or insufficiency, happens when a valve does not seal tightly. This allows blood to leak backward rather than flowing forward through the heart or into an artery. Since some blood flows in the wrong direction, your heart cannot work efficiently to get blood to your body.