Explanation:
1). the exchange of o2 and co2 happens mostly in the pulmonary arteries. Then travels through the bloodstream to oxygenate the cells throughout the body. This is also true to reoxygenate the cells to release co2
from the cells that travel back to the pulmonary arteries, all thru the bloodstream..
I think it’s false I hoped this helped
Answer:
here's the answer to your question hope it helps you
Explanation:
the mucus layer
