A person will not be able to say which valve would close someone needs to know what the valves are closed. This information is needed to answer the question.
i guess the answer is the valve plug
The Ileocecal valve
mitral valve prolapse
aortic valve closure
In the forth intercostal space, right to the sternum, probably.
The first heart sound, the so called "lub", comes from the closure of the atrioventricular valve. The second heart sound, the "dup", comes from the closure of the semilunar valve.
Failure of valve closure
Pyloric valve
When the right ventricle contracts (or is squeezed), the increase in its internal pressure will cause the right atrioventricular valve to close so the fluid doesn't flow backwards into the atrium.
Its on a small cylinder like thing, to the right of the valve cover. should have one or two leads connected to it
there is no right AV valve... it's called the tricuspid valve, as it has 3 cusps and in a perfect world the valve should close tightly and the water should flow out of the hole where the pulmonary artey used to be.
the valve closes and blood is forced out through the pulmonary artery to the lungs. perfect answer--straight to point!!