Dead space
Physiology
>
&tbnh=225&tbnw=225&usg=AI4_-kRRLfG2lK4TMegMY1fwJ6rVDtZAIg&vet=1&docid=VsMU98EXDtuM-M&itg=1&sa=X&ved=2ahUKEwjd_ZO0qduFAxU1oK8BHcKDBBEQ9QF6BAgAEAQ)
&tbnh=106&tbnw=150&usg=AI4_-kR8VmpidNMYkA7br7V2YfDlD9fmjQ&vet=1&docid=vwy8n7YJjVs5wM&sa=X&ved=2ahUKEwjd_ZO0qduFAxU1oK8BHcKDBBEQ9QF6BAgAEAY)
&tbnh=82&tbnw=136&usg=AI4_-kTLcNN2_AyN3TNWFnsfSCz62XULQA&vet=1&docid=ZKcfb0VgmjWlnM&sa=X&ved=2ahUKEwjd_ZO0qduFAxU1oK8BHcKDBBEQ9QF6BAgAEAg)
&tbnh=133&tbnw=103&usg=AI4_-kT31p7omxJlIMbp8JFqHJrGDrxMIw&vet=1&docid=66c0md-F1DjVgM&sa=X&ved=2ahUKEwjd_ZO0qduFAxU1oK8BHcKDBBEQ9QF6BAgAEAo)
Dead space is the volume of air that is inhaled that does not take part in the gas exchange, because it either remains in the conducting airways or reaches alveoli that are not perfused or poorly perfused. It means that not all the air in each... Wikipedia