Why is respiration important?

Respiration is important because it delivers oxygen to cells at a rate sufficient to meet their metabolic requirements.

Respiration aids in the exchange of gases between the body and its surroundings. Inhalation transports oxygen into the body, while exhalation transports carbon dioxide out. The oxygen is then transported to the cells, where it is used to generate energy during the process of cellular respiration.

Without enough oxygen, the cells would be unable to produce enough energy to meet the metabolic needs of the body. Carbon dioxide, a waste product of cellular respiration, must also be expelled from the body in order to maintain a proper gas balance.