Health Quiz Review

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Across
  1. 2. activity is steady enough to allow the heart to supply all the oxygen your muscles need
  2. 3. carries blood away from the heart to another part of the body
  3. 7. made up of your heart, blood vessels, and your blood
  4. 9. helps improve your cardiovascular fitness
  5. 10. is a more vigorous type of aerobic activity that elevates the heart rate
Down
  1. 1. a fatlike substance found in meats, dairy products, and egg yolks
  2. 4. made up of your lungs and the air passages that bring air, including oxygen, from outside the body into the lungs
  3. 5. a muscle that acts as a pump to supply blood to your body cells
  4. 6. means "with oxygen"
  5. 8. carries blood filled with waste products from the muscle cells back to the heart
  6. 11. the number of heart beats per minute when relatively inactive