Two Best Friends Play Dead Space 2 (Part 01)
Channel: Super Best Friends Play
Date: 30/08/2017

Title Art and Intro by Mothman

In physiology, dead space is the volume of air which is inhaled that does not take part in the gas exchange, either because it

(1) remains in the conducting airways.
or
(2) reaches alveoli that are not perfused or poorly perfused.

In other words, not all the air in each breath is available for the exchange of oxygen and carbon dioxide. Mammals breathe in and out of their lungs, wasting that part of the inspiration which remains in the conducting airways where no gas exchange can occur.

-Wikipedia