What is the expiratory reserve volume typically in milliliters?

Expiratory reserve volume (ERV) refers to the amount of air that can be forcibly exhaled after the end of a normal tidal expiration. This volume is an important measure in pulmonary function tests, as it reflects the capacity of the lungs to expel air beyond a regular breath. The typical value for ERV is approximately 1,200 milliliters in a healthy adult, which aligns with the selected answer.

Knowing this value helps in assessing conditions related to lung function, as decreased ERV can indicate restrictive lung disease or other pulmonary issues. The measurements are influenced by factors such as age, sex, body composition, and overall health, but the normative data typically cites around 1,200 ml for healthy adults. Understanding these volumes aids exercise physiologists in designing effective conditioning programs and evaluating respiratory health.