Practice Quiz

NREMT Paramedic

Category - Medical

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All of the statements below are true of the circulatory system except one. Which statement about the circulatory system is false?
  1. Capillaries are the smallest blood vessels.
  2. The sinoatrial node (pacemaker) is the origin of each heartbeat.
  3. The largest ventricle is the left ventricle which pumps blood to the lungs.
  4. The ventricles are larger chambers of the heart that push blood out of the heart.
  5. The atria are the smaller chambers of the heart that receive blood.
Explanation
Answer: C - All of the statements above are true of the circulatory system except that the left ventricle pumps blood to the lungs. In fact, the left ventricle (the largest chamber of the heart), pumps blood to parts of the body other than the lungs, while the right ventricle is the chamber of the heart that pumps blood from the heart to the lungs in a path called pulmonary circulation.
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