News tagged with breathing

Pre-op physical therapy may cut pulmonary complications

(HealthDay)—A 30-minute preoperative physical therapy session focused on breathing exercises is associated with a reduced incidence of postoperative pulmonary complications (PPCs) among patients undergoing upper abdominal ...

Jan 29, 2018
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These carbon dioxide-sensing neurons wake up mice

Stimulating a population of neurons in the midbrain with carbon dioxide (CO2) awakens adult male mice without enhancing breathing, finds a study published in JNeurosci. These findings are relevant to understanding disorders ...

Jan 29, 2018
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Gene mutation causes chronic bad breath

For the first time, researchers have uncovered that bad breath can be caused by a genetic defect. A mutation in the gene SELENBP1 leads to the absence of the protein that converts the sulphur compound methanethiol. Researchers ...

Dec 19, 2017
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Breathing

Breathing is the process that moves air in and out of the lungs. Aerobic organisms require oxygen to release energy via respiration, in the form of the metabolism of energy-rich molecules such as glucose. Breathing is only one process that delivers oxygen to where it is needed in the body and removes carbon dioxide. Another important process involves the movement of blood by the circulatory system. Gas exchange occurs in the pulmonary alveoli by passive diffusion of gases between the alveolar gas and the blood in lung capillaries. Once these dissolved gases are in the blood, the heart powers their flow around the body (via the circulatory system). The medical term for normal relaxed breathing is eupnea.

In addition to removing carbon dioxide, breathing results in loss of water from the body. Exhaled air has a relative humidity of 100% because of water diffusing across the moist surface of breathing passages and alveoli.

This text uses material from Wikipedia, licensed under CC BY-SA

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