Anatomic dead space is what % of tidal volume: (LQ)
I. A normal individual at rest inspires about 12 to 16 times/minute and each breath have a tidal volume of about 500 mL.
II. A portion (more or less 30%) of the fresh air inspired with each breath does not reach the alveoli but remains in the. conducting airways of the lung.
III. This component of each breath is called the ANATOMIC DEAD SPACE component.