The Structure and Function of the Cardio-Respiratory System

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Across
  1. 5. upper chambers of the heart that collect blood from veins.
  2. 8. expulsion of air from lungs, caused by reducing volume of chest cavity
  3. 9. volume, the amount of blood that leaves the heart during each contraction
  4. 10. heart atria and ventricles contract and pump blood to the arteries (contraction phase)
Down
  1. 1. rise, when HR increases before exercise because of the expectation of exercise
  2. 2. rate, is the number of time our heart beats per minute.
  3. 3. lower chambers of the heart which pump blood out of the heart to the arteries.
  4. 4. output, measured in ml/min
  5. 6. heart atria and ventricles relax and the heart fills with blood (relaxation phase)
  6. 7. intake of air into lungs, caused by increasing volume of chest cavity