1 The diaphragm is a large, sheet-like muscle at the bottom of your chest cavity. 2  It helps you exhale and inhale by moving up and down, respectively. 3  When your diaphragm contracts (moves up), you inhale air. 4  When your diaphragm relaxes (moves down), you exhale air.
http://peer.tamu.edu/curriculum_modules/OrganSystems/module_4/whatweknow_lungs2.htm
1 The walls are so thin that the oxygen, brought in during inhalation, can diffuse through them to enter your blood. 2  Likewise, carbon dioxide is carried by your blood to the blood vessels in the alveoli where it diffuses through the thin walls and into the air in your lungs. 3  That used air is now ready for exhalation.
http://peer.tamu.edu/curriculum_modules/OrganSystems/module_4/whatweknow_lungs2.htm
At the same time, a similar volume of carbon dioxide moves from the blood to the alveoli and is exhaled. During exercise, it is possible to breathe in and out more than 100 liters (about 26 gallons) of air per minute and extract 3 liters (a little less than 1 gallon) of oxygen from this air per minute.
http://www.merckmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/exchanging-oxygen-and-carbon-dioxide
This is where gas exchange takes place in the lungs. Alveoli are tiny balloon-like sacs, in the lungs, where gas exchange takes place and they serve as the barrier between the external environment (the air) and the internal environment (the blood).
http://peer.tamu.edu/curriculum_modules/OrganSystems/module_4/whatweknow_lungs2.htm
To support the exchange of oxygen and carbon dioxide, about 5 to 8 liters (about 1.3 to 2.1 gallons) of air per minute are brought in and out of the lungs, and about three tenths of a liter of oxygen is transferred from the alveoli to the blood each minute, even when the person is at rest.
http://www.merckmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/exchanging-oxygen-and-carbon-dioxide
Gas exchange is a process and what happens is that there is a pick up of oxygen and a release of carbon dioxide in the alveoli. 7 people found this useful.
http://www.answers.com/Q/What_is_the_process_of_gas_exchange_in_the_human_body
The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
http://www.merckmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/exchanging-oxygen-and-carbon-dioxide
gas exchange takes place in the lungs, and at the cellular level. In the lungs, carbon dioxide and other waste gasses are released from the blood to be exhaled, and oxygen … is absorbed into the blood. At the cellular level, oxygen is released from the blood into a cell, and carbon dioxide and other waste gasses are passed into the blood. 1 person found this useful.
http://www.answers.com/Q/What_is_the_process_of_gas_exchange_in_the_human_body
Ventilation is the process by which air moves in and out of the lungs. Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the gas in the alveoli and the blood in the capillaries in the lungs. Perfusion is the process by which the cardiovascular system pumps blood throughout the lungs.
http://www.merckmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/exchanging-oxygen-and-carbon-dioxide
Oxygen passes through the blood stream by using capillaries as a place to swap with carbon dioxide so that the alveoli gets the oxygen. Then the carbon dioxide leaves the body when we exhale.
http://www.answers.com/Q/What_is_the_process_of_gas_exchange_in_the_human_body
what is the process called for exchanges gases between body and air
Ventilation is the process called for exchanges gases between body and air. The process of exchanging gases between the body and air is called ventilation.