During the breathing cycle the lungs always contain a residual volume of air so that continuous inhalation and exhalation should take place. The carbon dioxide released moves into the blood and is carried to the lungs. The oxygen moves into the cells where cellular respiration takes place and energy is produced. Exchange of gases between blood vessels and alveoli takes place through diffusion followed by exhalation. For this, the alveoli are intensely folded and it results in increased surface area for easy diffusion. The exchange of gases between alveoli and blood vessels occurs through diffusion. Carbon dioxide and oxygen are exchanged in these site by simple diffusion on the basis of pressure or. This exchange of gases takes place both in the lungs during external respiration and in the cells during internal respiration. The gases are exchanged between tissues and blood. One gas oxygen is exchanged for another gas that is carbon dioxide. This creates a higher oxygen demand, and also a higher production of carbon dioxide. ATP is the energy source that fuels the movement of contractions in working muscles. The oxygen that is sent to your muscles is used to convert glucose into something called adenosine triphosphate (ATP). At the same moment, the carbon dioxide which is the waste product from the breakdown of sugars in the cells of the body diffuses into the blood and later it diffuses from the blood into the lungs and is expelled as we exhale or breathe out. When you exercise, your muscles are working hard. Then through the blood, it is taken to the heart and pumped into the cells. When we inhale or breathe in, oxygen enters the lungs and diffuses into the blood. Oxygen from the outside air is supplied by our lungs to the cells through the blood along with the cardiovascular system of our body to enable us to obtain energy. The process or exchange occurs simultaneously. This good blood flow maintains a steep concentration gradient between the oxygen (and carbon dioxide) in the alveoli and the blood so that the rate of diffusion.

Respiration is carried out mainly by the respiratory system. Specifically, oxygen moves from the outside air into the body and water vapor, carbon dioxide, and other waste gases move from inside the body into the outside air. This process is called the exchange of gases. Respiration is the life-sustaining process in which gases are exchanged between the body and the outside atmosphere. Carbon dioxide gets collected from the cells by the blood during the distribution of oxygen to the cells. At the same time, carbon dioxide present in the blood diffuses into the alveoli of the lungs from where it is removed from the body when we exhale. This means that we breathe in air containing oxygen that reaches the alveoli in our lungs where it diffuses into the blood through which it is carried to the heart. In the respiration process, oxygen and carbon dioxide are related in such a way that as the one moves inside the body at the same time the other rushes outside of the body. Hint: The respiration process involves the inhalation of oxygen-rich air from the atmosphere to each and every cell of the body and also the exhalation of deoxygenated air rich in carbon dioxide from the cells back to the atmosphere.

Oxygen and carbon dioxide are exchanged