Heidi Malone 10.7 Crossword Puzzle Challenge

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Across
  1. 1. Blood vessels that carry deoxygenated blood from the tissues back to the heart.
  2. 5. The middle layer of the heart wall that contains the heart muscle cells.
  3. 6. The sac-like membrane that surrounds and protects the heart.
  4. 7. output The amount of blood pumped by the heart per minute.
  5. 11. The largest artery in the body that carries oxygenated blood from the heart to the rest of the body.
  6. 13. Beat of the heart.
  7. 14. valve Located between the right atrium and the right ventricle; it has three (tri-) leaflets, or cusps.
  8. 15. Small blood vessels that connect arteries to capillaries.
Down
  1. 2. The innermost layer of the heart wall that lines the chambers and valves.
  2. 3. The phase of the cardiac cycle when the heart muscle contracts and pumps blood out of the chambers.
  3. 4. Tiny blood vessels that connect arterioles to venules and allow for the exchange of nutrients, gases, and waste products between the blood and tissues.
  4. 8. Blood vessels that carry oxygenated blood away from the heart to the rest of the body.
  5. 9. The phase of the cardiac cycle when the heart muscle relaxes and fills with blood.
  6. 10. small vein
  7. 12. The two upper chambers of the heart that receive blood from the veins and pump it into the ventricles.