Question

distinguished between (a)IRV and ERV (b) inspiratory capacity and expiratory capacity (c) vital capacity and total lung capacity .?

Answer 1

here is the information needed for you I hope it helps you

Answer 2

Explanation:

(a)

Inspiratory reserve volume (IRV)

1. It is the maximum volume of air that can be inhaled after a normal inspiration. 
2. It is about 2500 – 3500 mL in the human lungs.

Expiratory reserve volume (ERV)  

1. It is the maximum volume of air that can be exhaled after a normal expiration.
2. It is about 1000 – 1100 mL in the human lungs.

(b)

 Inspiratory capacity

1.  It is the volume of air that can be inhaled after a normal expiration. 
2. It includes tidal volume and inspiratory reserve volume.
3. IC = TV +IRV

Expiratory capacity (EC)  

1. It is the volume of air that can be exhaled after a normal inspiration.
2. It includes tidal volume and expiratory reserve volume. 
3. EC = TV + ERV

(c)

 Vital capacity (VC).

1. It is the maximum volume of air that can be exhaled after a maximum inspiration. It includes IC and ERV.  
2. It is about 4000 mL in the human lungs. 

Total lung capacity (TLC) 

1. It is the volume of air in the lungs after maximum inspiration.
2. It is about 5000 – 6000 mL in the human lungs.