Cardiovascular, respiratory and muscular system

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Across
  1. 4. Attaches muscle to bone
  2. 5. Other than energy, what is a by product of anaerobic respiration
  3. 7. The valve between the right atrium and right ventricle
  4. 8. What would happen to our resting heart rate if we trained regularly?
  5. 11. The blood vessel that can withstand the highest blood pressure
  6. 12. The amount of blood pumped out of the heart in one minute
  7. 14. Increase in muscle size
  8. 15. During inhalation, this gas represents 21% of the total composition of air
  9. 16. A short term effect of exercise on the muscular system
Down
  1. 1. The narrowing of the blood vessels
  2. 2. A muscle in the upper body that creates the most amount of movement
  3. 3. Which muscle works in an antagonistic pair with the tibialis anterior?
  4. 6. The movement created at the ankle when jumping over hurdles
  5. 9. The amount of oxygen needed at the end of an activity to break down any lactic
  6. 10. These create clots in the blood
  7. 13. An activity that lasts a prolonged period of time