MCQ IN MEDICINE

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: -Internal respiration is the exchange of gases with the internal environment, and occurs in the tissues. The actual exchange of gases occurs due to simple diffusion. Energy is not required to move oxygen or carbon dioxide across membranes.

Detailed explanation-4: -Respiration is Gas Exchange External respiration refers to gas exchange across the respiratory membrane in the lungs. Internal respiration refers to gas exchange across the respiratory membrane in the metabolizing tissues, like your skeletal muscles, for example.