Question

What happens to blood as it flows through the lungs?
A. The blood becomes deoxygenated
B. The blood becomes oxygenated
c. the blood diffuses into the alveoli
d. the blood loses its bright red colour

Answer 1

I think it's b. "...At the same time, carbon dioxide, a waste product of metabolism, passes from the blood into the air sacs. Carbon dioxide leaves the body when you exhale. Once the blood is purified and oxygenated, it travels back to the left atrium through the pulmonary veins."
http://answers.webmd.com/answers/1181895/how-does-blood-flow-through-your
@alana242

Answer 2

Actually I think it first diffuses into the alveoli.

Answer 3

So c is probably the correct answer.

Answer 4

The alveoli do not fill with blood, instead they fill with air and the blood comes into contact with the alveoli and becomes oxygenated based some principals of air pressure and oxygen concentration.

Based on that I think the answer is B

Answer 5

B

Answer 6

i think b