PATHOLOGY

Detailed explanation-1: -The exchange of gases between the blood and tissue cells is internal respiration. Finally, the cells utilize the oxygen for their specific activities: this is called cellular metabolism, or cellular respiration. Together, these activities constitute respiration.

Detailed explanation-2: -Internal respiration is also known as cellular respiration as it occurs inside the living cells. The exchange of carbon dioxide and oxygen gases during cellular respiration occurs between the blood and other cells of the body.

Detailed explanation-3: -It generally refers to the exchange of gases mainly oxygen and carbon dioxide, which occurs between the blood and cells. During the internal respiration process, oxygen binds to the haemoglobin in alveolar tissues and gets transported to various parts of body tissues.