oxygen
blood take oxygen from blood.
gas exchange is the intake of the oxygen and the let out of the carbon dioxide
Oxygen diffuses from the alveoli into the blood because of a concentration gradient. The partial pressure of oxygen in the alveoli is higher than in the blood, so oxygen moves across the thin membrane of the alveoli into the blood to reach equilibrium.
Carbon dioxide does.
alveoli son..
Oxygen enters the blood in the alveoli of the lungs
ravioli
The exchange of oxygen and carbon dioxide in the blood occurs in the capillaries surrounding the alveoli in the lungs. Oxygen diffuses from the alveoli into the blood, while carbon dioxide moves from the blood into the alveoli to be exhaled.
When we inhale in and out oxygen moves from the alveoli to blood carbon dioxide moves from blood to alveoli.
Oxygen enters the blood in the alveoli of the lungs
It diffuses into the blood capillaries surrounding the alveoli.