Oxygen is unloaded from the blood stream and diffuses into surrounding cells and tissues during ________.
A) internal respiration
B) pulmonary ventilation
C) external respiration
D) respiratory gas transport
E) tidal volume

Question

Quizplus · Accepted Answer

Oxygen is unloaded from the blood stream and diffuses into surrounding cells and tissues during internal respiration. Internal respiration refers to the exchange of gases between the systemic capillaries and the surrounding tissues, where oxygen diffuses from capillaries to tissues and carbon dioxide diffuses from tissues to capillaries. Pulmonary ventilation refers to the movement of air in and out of the lungs, external respiration refers to the exchange of gases between the alveoli and the pulmonary capillaries, respiratory gas transport refers to the transportation of oxygen and carbon dioxide in blood, and tidal volume refers to the amount of air inhaled or exhaled during a single breath.

Oxygen Is Unloaded from the Blood Stream and Diffuses into Surrounding