Question

multiple choice question
which respiratory volume has a normal value of 500 ml?
tidal volume (tv)
expiratory reserve volume (erv)
total lung capacity (tlc)
inspiratory reserve volume (irv)

Explanation:

Tidal volume (TV) is the amount of air that moves in or out of the lungs with each respiratory cycle. In a healthy adult, the normal tidal volume is approximately 500 mL. Expiratory reserve volume (ERV) is the additional air that can be forcefully exhaled after a normal exhalation (about 1000 - 1200 mL). Total lung capacity (TLC) is the total volume of air in the lungs after a maximum inhalation (about 5800 mL in males and 4200 mL in females). Inspiratory reserve volume (IRV) is the additional air that can be forcefully inhaled after a normal inhalation (about 3000 mL).

Answer:

tidal volume (TV)