Listed below are four respiratory capacities (i-iv) and four jumpled respiratiory volumes of a normal human adult.
`{:(,"Respiratory volumes and capacities","Volume of air"),((i),"Residual volume","1200 mL"),((ii),"Vital capacity","4500 mL"),((iii),"Inspiratory reserve volume","2500 mL"),((iv),"Inspiratory capacity","3500 mL"):}`

Options

A. (2)2500 mL.(3) 4500 mL
B. (3) 1200 mL.(4)2500 mL
C. (4) 3500 mL, (1) 1200 mL
D. (1) 4500 mL, (2) 3500 mL

Answer

C

Explanation

Inspiratiory capoacity (IC) is the maximum amount of air that can be inspired after a normal expiration .IC =TV+IRV. It is 3500 mL in adult male and 2400 mL inadult female.
Residual volume (RV) is ythe amount of air remaining in the lungs after of forced exhalation.OIts average value is 1200 mL and 1100 mL in adult male and female respectively.