Question

Which of the following occurs when oxygen transfer from the blood to the body's cells and tissues?

Answer 1

Answer: Option B.

External respiration.

Explanation:

External respiration is also called breathing and it occurs in the lungs. It refer to a process where oxygen is inhaled and diffuse into the blood to body tissues and carbon dioxide is expelled out in the air.

Answer 2

Answer:

B. External respiration

Explanation:

Respiration means transport of oxygen to the cells within tissues, and the transport of carbon dioxide in the opposite direction.