The bicuspid valve is located between the left atrium and left ventricle and likewise opens due to a build-up of pressure, this time in the left atrium. The semilunar valves stop the back flow of ...

It likewise opens due to a build-up of pressure, this time in the left atrium. The semilunar valves stop the back flow of blood into the heart. There is a semilunar valve where the aorta leaves ...