Circulatory System (BIOL 172)

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Across
  1. 2. cardiac muscle contraction
  2. 4. How many valves does the human heart have?
  3. 5. tubes that pump blood away from the heart
  4. 7. a valve between the left ventricle and aorta
  5. 9. How many chambers does an amphibian heart have?
  6. 11. low blood sugar
  7. 14. ____is the accumulation of fats (LDL cholesterol) in our arteries
  8. 15. cardiac muscle relaxation
Down
  1. 1. ____circuit is when blood flows from the heart to the lungs & skin.
  2. 3. tubes that have an internal diameter of hairlike thinness
  3. 6. ____is the expansion of blood vessels (a process of making them wider to increase blood flow)
  4. 8. another name for red blood cells
  5. 10. high blood sugar
  6. 12. tubes that bring blood to the heart
  7. 13. ____circulatory system is when a pumping structure pumps stuff into a body cavity and bathes the tissues inside