Define the term tidal volume , vital capacity and residual volume in relation to respiration

tidal volume is the amount of air that enters the lungs during a normal inhalation at rest, an average amount is 500 ml.
vital capacity is the maximum amount of air that is expelled from the lungs after a maximum inhalation.
residual volume is the volume of air that is still remaining in lungs in other words it is the supplementary air available in the lungs.
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Tidal Volume(TV)- Volume of air inspired or expired during a normal respirstion. It is about 500 ml in healthy man.
Residual Volume(RV)- Volume of air remains in lungs even after a forcible expiration. It is about 1100 ml to 1200 ml.
Vital Capacity(VC)- Maximum volume of air a person can breath in after a forceful expiration. ERV+TV+IRV.

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