What is gas exchange?
gas exchange is a process that occurs as part of breathing, allowing the body to exchange waste gases with the gases it needs to work. In the case of people and other mammals, this allows carbon dioxide and oxygen intake. The gas is replaced along the respiratory membrane, such as lung lung in animals, and the organism circulatory system allows gases to move throughout the body. For unicellular animals, the gas replacement allows gas to move freely directly and out of the cell. Animals such as amphibians can rely on their skin to replace gas, while grilled animals such as fish use a large surface area of the gills to pull melted oxygen from the water and into their body.
Every time a person takes breath, air rich in oxygen and other gases enter the lungs. The air moves from the area of high pressure, filled with lungs, into the low pressure area, one of the alveoli, small bags lining the lungs. From there, oxygen passes through a thin membrane to the DOD capillariesOutgoing lungs where they bind to hemoglobin for transport throughout the body. As blood circulates, it also carries waste such as carbon dioxide and supplies it to the lungs for gas exchange so that they can be pushed out of the alveoli and exhaled when a person exhales.
people who have difficulty breathing can begin to develop hypoxia, a condition in which it does not reach enough oxygen. This may happen when gas exchange is inhibited by liquid in the lungs when the lungs cannot inflate properly or when the airways are blocked. A patient who is unable to exclude carbon dioxide and obtain oxygen in exchange will begin to develop limb grinding and can breathe for air.
In an environment rich in other gas, such as nitrogen, gas can push oxygen so that oxygen makes it impossible to achieve lungs. The patient may be able to breathe normally, but because the gas with oxygen is not replaced, the person will slowly starve with oxygen. Depending on gas breathing, patients may develop symptoms such as dizziness, confuseK and drowsiness before succumbing to the coma and possible death due to lack of oxygen.