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2. what is the tidal volume

  • surface area
  • amount of air inhaled/exhaled per breath
  • gas exchange
  • the amount of air inhaled per breath

3. what is Vital Capacity

  • Maximum volume of gas exchanged after lungs have been filled to maximum capacity
  • breathing in and out
  • the important capacity of the lungs
  • how far the lungs increase by during inspiration

4. what is residual volume

  • the volume of moist air
  • the volume remaining after maximum exhalation
  • the process of air entering the lungs
  • the gas that does not enter the lungs

5. why are the alveoli walls one cell thick

  • the allow more air in it
  • to provide a large surface area to volume ratio
  • to provide a thin permable surface area for gas exchange
  • to keep the area moist
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