Question

Exchange of gases between blood and tissue cells in systematic capillaries is called as

• A. External process
• B. Internal process
• C. Cellular respiration
• D. None of the above

Answer 1

The correct option is B Internal process

There are two forms of respiration, internal and external respiration. 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 metabolising tissues.There is exchange of gases between blood and cells in systemic capillaries. In the internal respiration, there is diffusion of the oxygen from the blood into the tissues and the carbon dioxide diffuses out of the cell into the blood.

Thus, the correct answer is option B.