Oxygen diffuses from the alveoli into the blood due to higher PO2 (partial pressure of oxygen) levels in the alveoli than in the blood.
In the alveoli
In the alveoli
The exchange of gases between the alveolar air and pulmonary capillary blood is called pulmonary gas exchange. Oxygen diffuses from the alveoli into the capillaries, while carbon dioxide diffuses from the capillaries into the alveoli. This process is essential for the body to obtain oxygen and release carbon dioxide.
By diffusion across q capillary wall
Oxygen enters the blood in the alveoli of the lungs
Oxygen enters the pulmonary blood in the capillaries of the alveoli -- the air sacs of the lungs.
alveoli
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.
carbon dioxide
The capillary net rould the alveoli.
The air flow of the lungs is as follows... From the Nasal cavities to the Pharynx to the Larynx to the Trachea to the Bonchi to the Bronchioles Alveoli ...The respiratory gases, oxygen, and carbon dioxide, diffuse across the Aveolar pulmonary Capillary membrane. Hope this diaphragm answers your question
Normally very little to no fluid enters the alveoli of the lungs. In pulmonary edema there is increased pressure in the pulmonary veins. So fluid escapes in the alveoli of the lungs, making transfer of the oxygen impossible from such alveoli. Patient feels suffocated and starve for oxygen, in pulmonary edema.