Question

what happens when the right ventricle contracts? the tricuspid valve opens the pulmonary valve opens the aortic valve opens the mitral valve opens the tricuspid valve closes

Explanation:

When the right ventricle contracts, the pressure inside the ventricle increases. This causes the tricuspid valve (which separates the right atrium and right ventricle) to close to prevent backflow of blood into the right atrium. At the same time, the increased pressure forces the pulmonary valve (which leads from the right ventricle to the pulmonary artery) to open, allowing blood to be pumped to the lungs for oxygenation. The aortic valve is related to the left ventricle (opens when the left ventricle contracts to pump blood to the body), and the mitral valve is between the left atrium and left ventricle.

Answer:

The pulmonary valve opens, The tricuspid valve closes