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They diffuse through the membrane.
Diffusion is the movement of gaseous particles from a high concentration of particles, to a low concentration.
Using your example of CO2, there is a high ammount of CO2 in de-oxygenated blood, so it travels to the alveoli through the membranes, where there is a lower concentration of CO2.
Remember, near every alveoli there is a capillary, which makes this possible.
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Oxygen diffuse into the blood at the alveoli?
Carbon dioxide does.
Where in the human body is o2 and co2 exchanged?
Human gas-exchange occurs in the lungs. Once air enters the lungs, diffusion of O2 and CO2 occurs in the alveoli.
What does the alveoli do when you breathe out?
It gives off the Co2 which is produced in the blood vessels covering the alveoli
What happens to carbon dioxide in the blood that flows through the capillaries in the alveoli?
alveoli take co2 from your blood and turns it into gas
How the air is exchanged from the lungs to the blood?
air exchange takes place at the juction of blood cappileries and alveoli where the pressure of air is high in alveoli and low in blood so air from alveoli rush into blood and CO2 from blood rush in to alveoli which is then breath out
What is the type of transport that oxygen move from the alveoli into the pulmonary capillary blood?
Oxygen diffuses from the alveoli into the blood due to higher PO2 (partial pressure of oxygen) levels in the alveoli than in the blood.
Where are carbon dioxide and blood in the body?
CO2 exchanged to blood through capillaries and blood to alveoli
What will happen to carbon dioxide as blood flows around the alveoli?
The CO2 is diffused back into the alveoli, where, by the diaphragm, is pushed back into the environment by atmospheric pressure.
What happens to the carbon dioxide in the blood when it flows through the capillares in the aveoli?
CO2 diffuses from the blood to the alveoli and the exhalation removes the CO2 from the body.
What are the characteristics of the alveoli that help with its function?
gas exchange is the intake of the oxygen and the let out of the carbon dioxide
What is the Diffusion of gases between alveoli and blood?
The Diffusion is the exchange of oxygen (O2) and carbon dioxide (CO2) between the alveoli and the blood. So blood that is pumping through the capillaries in the lungs has a low concentration of O2 and a high concentration of CO2, in the alveoli it is high concentration O2 low concentration CO2. Therefore the 2 gases exchange across the alveoli membrane by diffusion trying to establish a concentration gradient.
How does the blood get oxygen?
by suking it
