Breathing Volumes

Cards (6)

  • The composition of air inhaled by the lungs is 21% oxygen, 79% nitrogen, and 0.04% carbon dioxide
  • The composition of air exhaled by the lungs is 21% oxygen, 79% nitrogen, and 4% carbon dioxide
  • During exercise the amount of oxygen in inhaled air will increase and in the exhaled air will decrease
  • During exercise the composition of nitrogen in inhaled and exhaled air will stay the same
  • During exercise the composition of carbon dioxide in inhaled air will stay the same and in exhaled air will increase
  • What are the two muscles involved in respiration?
    • Intercostal muscles
    • diaphragm