Question

Physiologically, the term respiration refers to​ the:

A.mechanical process that moves air into and out of the lungs.

B.exchange of gases at the​ alveolar-capillary interface.

C.exchange of gases at the cellular level.

D.exchange of all​ gases, nutrients, and wastes at the cellular level.

Answer 1

Respiration refers to the exchange of gases between the body and the outside air. It involves ventilation, or breathing, and gas exchange at the alveolar-capillary interface.

Step-by-step explanation:

Respiration refers to the exchange of gases between the body and the outside air. It involves two processes:

ventilation or breathing, which is the mechanical process of moving air into and out of the lungs, and gas exchange, which is the biochemical process that occurs at the alveolar-capillary interface. In gas exchange, oxygen enters the blood while carbon dioxide and other waste gases exit the blood.