Cardiovascular Part 1: Heart & Blood

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Across
  1. 3. A cell that transports oxygen to tissues and carries carbon dioxide away.
  2. 6. An enzyme that helps control blood pressure through fluid balance.
  3. 7. A hormone that stimulates production of oxygen-carrying cells in bone marrow.
  4. 8. The muscular layer responsible for contraction and pumping.
  5. 11. A cell involved in defending the body against infections and diseases.
  6. 13. A substance that triggers an immune response.
  7. 15. A major blood vessel that carries oxygen-rich blood away from the heart.
  8. 17. A muscular wall that separates the right and left sides, preventing blood mixing.
  9. 18. Related to circulation between the heart and the rest of the body.
Down
  1. 1. Related to the lungs or blood flow between the heart and lungs.
  2. 2. A lower chamber that pumps blood either to the lungs or the rest of the body.
  3. 4. A protein that binds oxygen for transport through the body.
  4. 5. A protective sac that encloses the heart and reduces friction.
  5. 9. An external flap that increases the capacity of an upper heart chamber.
  6. 10. The upper chambers that receive returning blood.
  7. 12. cava Large veins that return oxygen-poor blood to the heart.
  8. 14. A cell active in allergic responses and fighting parasites.
  9. 16. A protein that binds specifically to a foreign substance to help remove it.
  10. 18. Node A group of specialized cells that generate electrical impulses to regulate heartbeat.