Most likely the outside air but another possible answer would be the brounchus, lungs, windpipe, etc.
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.
Oxygen diffuses from the alveoli in the lungs into the surrounding capillaries. The concentration of oxygen in the alveoli is higher than in the blood, so oxygen moves across the thin wall of the alveoli and into the bloodstream through a process called diffusion.
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.
Oxygen enters the blood in the alveoli of the lungs
your lungs have structures called alveoli. The alveoli are surrounded by capillary beds which carry blood. The oxygen enters the alveoli when you inhale. The oxygen then diffuses from high concentration in your alveoli to low concentration the blood in the capillaries surrounding the alveoli.
Oxygen is removed from the alveoli by the cappillaries.
Carbon dioxide does.
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.
your lungs have structures called alveoli. The alveoli are surrounded by capillary beds which carry blood. The oxygen enters the alveoli when you inhale. The oxygen then diffuses from high concentration in your alveoli to low concentration the blood in the capillaries surrounding the alveoli.
alveoli son..
Partial pressure affects the movement of oxygen from the alveoli to the blood because it is the main driving force for oxygen movement in the lungs.Oxygen passes from the air to the fluid within the alveoli, into the cell of the alveoli.
Alveoli takes oxygen in and brings out carbon dioxide.
i dont noww , alveoli is stupid
It diffuses into the blood capillaries surrounding the alveoli.
Oxygen diffuses from the alveoli in the lungs into the surrounding capillaries. The concentration of oxygen in the alveoli is higher than in the blood, so oxygen moves across the thin wall of the alveoli and into the bloodstream through a process called diffusion.
Oxygen enters the blood in the alveoli of the lungs
oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).