RT Book, Section A1 Levitzky, Michael G. A2 Levitzky, Michael A2 McDonough, Kathleen A2 Kaye, Alan David A2 Hall, Stanley SR Print(0) ID 1175534944 T1 Alveolar Ventilation T2 Clinical Physiology in Anesthetic Practice YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781259641954 LK accessanesthesiology.mhmedical.com/content.aspx?aid=1175534944 RD 2022/08/17 AB Alveolar ventilation is defined as the volume of fresh air entering and alveolar air leaving the alveoli per minute. The two volumes are not usually exactly equal because not every molecule of oxygen used by the body results in a molecule of CO2 released by the body, and also because of the heating and humidification of inspired air described in Chapters 25 and 34. Alveolar ventilation is not the same as the ventilation per minute measured at the nose or mouth because not all of the air entering the body per breath reaches the alveoli. A substantial portion of each inspired breath remains in the conducting airways and does not enter the alveoli.