What is the role of the valves in the heart?

Practice Questions

Q1
What is the role of the valves in the heart?
  1. To increase blood pressure
  2. To prevent backflow of blood
  3. To oxygenate blood
  4. To regulate heart rate

Questions & Step-by-Step Solutions

What is the role of the valves in the heart?
  • Step 1: Understand that the heart is a pump that moves blood around the body.
  • Step 2: Learn that blood needs to flow in one direction to be effective.
  • Step 3: Know that valves are like doors in the heart that open and close.
  • Step 4: Realize that when the heart pumps, the valves open to let blood through.
  • Step 5: Understand that when the heart relaxes, the valves close to stop blood from flowing backward.
  • Step 6: Conclude that the main role of the valves is to prevent backflow and keep blood moving forward.
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