Lung volume

• • Lung volume - amount of air breathed in/out and how much is found in lungs
  • Spirometer - measures lung volume
• • Tidal volume - volume of air in or out per breath at rest
  • Inspiratory reserve volume - amount of air breathed in
  • Expiratory reserve volume - amount of air breathed out
  • Residual volume - amount of air left in lungs after maximum Expiration
• CHANGES DURING EXERCISE

  • Tidal volume increases
  • Inspiratory and expiratory reserve volume decreases
  • Residual volume stays the same