Question

Define the following terms?

(a) Tidal volume

(b) Residual volume

(c) Asthma

Answer 1

(a) Tidal Volume (TV) is the volume of air inspired or expired during normal breath. This is about 500 mL, i.e., a healthy man inspire or expire about 6000 to 8000 mL of air per minute.

(b) Residual Volume (RV) is the volume of air remaining in the lungs even after a forcible expiration. It is about 1100 mL to 1200 mL.

(c) Asthma It is a disease caused due to an allergic reaction to foreign substances. The major symptoms are difficulty in breathing causing wheezing and coughing. Due to the inflammation of bronchi.