Tidal volume is

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(A) Tidal Volume $(TV)$ is defined as the volume of air inspired or expired during a normal,involuntary breath. In an average healthy young adult,this

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Volume of air inspired or expired

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(A) Tidal Volume $(TV)$ is defined as the volume of air inspired or expired during a normal,involuntary breath. In an average healthy young adult,this volume is approximately $500 \; mL$. Other respiratory volumes are: $(i)$ Inspiratory Reserve Volume $(IRV)$: The additional volume of air a person can inhale by a forcible inspiration,approximately $2500 \; mL$ to $3000 \; mL$. $(ii)$ Expiratory Reserve Volume $(ERV)$: The additional volume of air a person can expire by a forcible expiration,approximately $1000 \; mL$ to $1100 \; mL$. $(iii)$ Residual Volume $(RV)$: The volume of air remaining in the lungs even after a forcible expiration,approximately $1100 \; mL$ to $1200 \; mL$.

Respiratory capacities	Respiratory volumes
$(i)$ Residual volume	$2500 \; mL$
$(ii)$ Vital capacity	$3500 \; mL$
$(iii)$ Inspiratory reserve volume	$1200 \; mL$
$(iv)$ Inspiratory capacity	$4500 \; mL$

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