Vital capacity is defined as the:
A) maximum volume of air that can be moved into and out of the lungs during forced respiration.
B) volume of air that can be forcibly exhaled after a normal inspiration.
C) volume of air that can be forcibly exhaled at the end of a normal expiration.
D) total volume of air contained in the respiratory passages.

Question

Quizplus · Accepted Answer

Vital capacity refers to the maximum amount of air that can be moved in and out of the lungs during forced respiration, which includes both inhaling and exhaling. Therefore, option A is the correct definition of vital capacity. Option B describes forced expiratory volume in one second (FEV1), while option C describes forced expiratory volume (FEV), both of which are different lung capacity measures. Option D is not a valid definition of any lung capacity measure.

Vital Capacity Is Defined as The