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What is the function of the valves in the heart?

Practice Questions

Q1
What is the function of the valves in the heart?
  1. To increase blood pressure
  2. To prevent backflow of blood
  3. To regulate heart rate
  4. To supply oxygen to the blood

Questions & Step-by-Step Solutions

What is the function of the valves in the heart?
  • Step 1: Understand that the heart has four chambers: two atria and two ventricles.
  • Step 2: Learn that there are four valves in the heart: the tricuspid valve, the pulmonary valve, the mitral valve, and the aortic valve.
  • Step 3: Know that these valves open and close to control blood flow between the chambers and out of the heart.
  • Step 4: Realize that the main function of the valves is to prevent blood from flowing backward (backflow).
  • Step 5: Remember that this ensures blood flows in one direction: from the atria to the ventricles and then out to the body or lungs.
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