The semilunar valves stop the back flow of blood into the heart. There is a semilunar valve where the aorta leaves the left ventricle and another where the pulmonary artery leaves the right ventricle.

It can lead to stroke, heart attacks, dementia, and other health issues. "Blood flow-driven forces, like shear stress, play a critical role in the development and progression of various ...

If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump ...