The Heart

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Across
  1. 3. When the left ventricle contracts, this valve closes. This forces the blood to flow from the left ventricle.
  2. 4. carries deoxygenated blood to the right atrium of the heart.
  3. 5. allows blood to flow from the heart's lower left ventricle into the aorta.
  4. 6. Blood from the heart flows through these and collects oxygen while it expels carbon dioxide.
  5. 7. the semi-lunar valve of the heart that lies between the right ventricle and the pulmonary artery.
  6. 9. Blood collects into the right atrium, and it must flow through here before entering the right ventricle.
  7. 10. carry blood from the heart to all the organs and muscles of the body.
  8. 11. pumps the oxygen-rich blood through the aortic valve.
  9. 12. receives deoxygenated blood from the body through the vena cava and pumps it into the right ventricle.
  10. 13. pumps the blood up through the pulmonary valve.
  11. 14. carries deoxygenated blood from the heart to the lungs.
Down
  1. 1. Oxygen-rich blood from the lungs enters here and the blood is then pumped into the left ventricle chamber of the heart through the mitral valve.
  2. 2. receive oxygenated blood from the lungs and drain into the left atrium.
  3. 6. allow oxygen, nutrients, carbon dioxide and waste products to pass to and from the tissue cells.
  4. 8. carry deoxygenated blood back to the heart.
  5. 15. carries blood from the heart.