Question 1 Define vital capacity. What is its significance?
Class - XI - Biology Chapter Breathing and Exchange of Gases Page No. 277
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Answered by
50
→Vital capacity is the maximum volume of air that person breathe's in after a forced expiration.
→It's formula is Expiratory reserve volume + Tidal volume + Inspiratory reserve volume.
→It is around 3.5 - 4.5 litres in our body.
→It promotes to get in more fresh air.
→It helps in getting rid of foul air.
→It helps in gaseous exchange between atmosphere and tissues.
→It's formula is Expiratory reserve volume + Tidal volume + Inspiratory reserve volume.
→It is around 3.5 - 4.5 litres in our body.
→It promotes to get in more fresh air.
→It helps in getting rid of foul air.
→It helps in gaseous exchange between atmosphere and tissues.
Answered by
22
Vital capacity is the amount of air which one can inhale with maximum effort and also exhale with maximum effort. It is about 3.5-4.5 litres in a normal person. It represents the maximum amount of air one can renew in the respiratory system in a single respiration. Thus, greater the vital capacity, more is the energy available to the body
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