Question

The normal alveolar volume in a healthy adult is:

A) 250 mL.
B) 300 mL.
C) 350 mL.
D) 400 mL.

Answer 1

The normal alveolar volume, which is the tidal volume during quiet breathing, is approximately 500 milliliters, not any of the options provided in the question.

Step-by-step explanation:

The normal alveolar volume in a healthy adult is typically around 500 milliliters. This measurement refers to the tidal volume (TV), which is the amount of air that normally enters the lungs during quiet breathing. Neither options A) 250 mL, B) 300 mL, C) 350 mL, nor D) 400 mL accurately reflect the normal tidal volume. The respiratory volumes, such as tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume, are all important aspects of a person's respiratory health. The residual volume in particular helps in making breathing easier by preventing the alveoli from collapsing.