Question

The opening and closing of the tricuspid valve is caused by

Answer 1

Heya !!

The opening and closing of the tricuspid value is caused by the prevention of blood from backing into the right atrium and the opening pf the pulmonary value allow the blood to flow into the pulmonary artery towards the lungs.

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Answer 2

Answer:

While the left ventricle is relaxing, the right ventricle also relaxes. This causes the pulmonary valve to close and the tricuspid valve to open. ... When the left ventricle contracts, the right ventricle also contracts. This causes the pulmonary valve to open and the tricuspid valve to close.