At what location does the blood release oxygen and take on carbon dioxide?
a. in the veins
b. at the lungs
c. at the heart
d. at the body cells
1 answer
The correct answer is b. at the lungs. In the lungs, oxygen diffuses into the bloodstream and carbon dioxide diffuses out of the bloodstream to be exhaled. This process is essential for respiration and supplying the body's cells with oxygen for energy production.