What is internal respiration?

Question

Quizplus · Accepted Answer

Internal respiration refers to the exchange of gases between the blood and the tissue fluid. This occurs in the capillaries where oxygen diffuses out of the blood and into the tissues, while carbon dioxide diffuses from the tissues into the blood to be transported to the lungs for removal. Ventilation (breathing) is not considered internal respiration as it involves the movement of air in and out of the lungs. Production of ATP is a cellular process that occurs through cellular respiration, which includes both internal and external respiration. Gas exchange between air and blood refers to external respiration, which occurs in the lungs.

What Is Internal Respiration