Question

what happens when the right ventricle contracts?

the pulmonary valve opens

the mitral valve opens

the aortic valve opens

the tricuspid 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 back - flow of blood into the right atrium. At the same time, the pulmonary valve (which leads from the right ventricle to the pulmonary artery) opens, allowing de - oxygenated blood to be pumped to the lungs for oxygenation. The mitral valve is between the left atrium and left ventricle, the aortic valve is between the left ventricle and aorta, and when the right ventricle contracts, the tricuspid valve closes (not opens).

Answer:

The pulmonary valve opens, The tricuspid valve closes