Question

When the exchange of gases occurs between blood and tissue fluid, it is called?

• A. External respiration
• B. Internal or tissue respiration
• C. Cellular respiration
• D. All the above

Answer 1

The correct option is B Internal or tissue respiration

B. Internal or tissue respiration

Reason: Gas exchange in tissues is a result of tissue surface area, gas partial pressure gradients, and the blood perfusion of those tissues. It occurs in the alveoli so that oxygen is loaded into the bloodstream and carbon dioxide is unloaded from the bloodstream. It is a part of internal respiration. So the correct option is B.