Circulatory system

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Across
  1. 4. an eating plan to support heart health
  2. 5. valve connecting right atrium and right ventricle is called ...
  3. 6. condition if you lack hematocrit
  4. 9. red blood cells
  5. 13. what is the gas that blood delivers to organs
  6. 14. high blood pressure for a long time is called ...
  7. 16. measuring unit of blood pressure is millimeters of ...
  8. 17. state when the heart contracts to push the blood out
  9. 18. protective outer layer of a heart
Down
  1. 1. a circulatory system is also called ... system
  2. 2. very small arteries (arterioles) and veins (venules) in one word
  3. 3. thrombocytes are also called ...
  4. 6. upper heart chambers are called
  5. 7. thin, muscular tubes that carry oxygenated blood away from the heart
  6. 8. 55% of blood is ...
  7. 10. a layer of muscular tissue that divides heart walls into left and right sides
  8. 11. circulatory system provides ... to the organs and tissues
  9. 12. how many chambers does human heart have?
  10. 15. blood loss usually causes ... blood pressure