Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

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What does the pulmonary valve control?

  1. Blood flow into the left atrium

  2. Blood flow into the right ventricle

  3. Blood flow into the aorta

  4. Blood flow into the pulmonary artery

The correct answer is: Blood flow into the pulmonary artery

The pulmonary valve plays a crucial role in the cardiovascular system by controlling blood flow from the right ventricle into the pulmonary artery. This valve opens during ventricular contraction (systole) to allow deoxygenated blood to be pumped into the pulmonary artery, where it will then travel to the lungs for oxygenation. When the heart relaxes (diastole), the pulmonary valve closes to prevent the backflow of blood from the pulmonary artery into the right ventricle, ensuring efficient circulation and maintaining proper hemodynamics. Understanding the specific function of the pulmonary valve aids in grasping the overall mechanics of the heart and the pulmonary circulation, which are essential concepts in health assessments.

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