Oxygen
Oxygen is the gas that passes from the lungs to the bloodstream.
oxygen
Carbon Dioxide
Oxygen is the gas that usually passes into cells. It moves by diffusion from the bloodstream.
Carbon dioxide is produced as a waste product of respiration, and is taken in the bloodstream to the capillaries outside the lungs, where the CO2 diffuses into the alveoli of the lungs.
carbon dioxide
In the alveoli (also called air sac) is the capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place by diffusion. The oxygen poor blood goes from the right ventricle and into the lungs where the co2 is traded for Oxygen in the alveoli and back through the heart and out to the body.
In the lungs. This process is called the Gas Exchange.Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
Oxygen enters your nose,then goes through the trachea,to the bronchi,and last to your lungs.
Your body warms and moistens the air that passes into the lungs to make it easier for oxygen to pass into the bloodstream.
The process in which oxygen enters the bloodstream through the alveolus and carbon dioxide exits the bloodstream also through the same alveolus to be exhaled.
In the alveoli of the lungs. This is where oxygen diffuses from the lungs into the bloodstream and carbon dioxide diffuses out of the bloodstream and into the lungs.