Medical research

How baby's first breath triggers life-saving changes in the brain

There are few moments in life as precious, as critical and as celebrated as a baby's first breath. New research from the University of Virginia School of Medicine sheds light on the lifelong changes in breathing systems that ...

Pediatrics

Diagnosing the cause of exercise-induced respiratory symptoms

Exercise-induced respiratory symptoms are common in childhood, and it can be difficult to diagnose their cause. A study published in Pediatric Pulmonology found that the diagnoses proposed by primary care physicians are often ...

Diseases, Conditions, Syndromes

Damage to vocal cords could cause long-term COVID symptoms

(HealthDay)—Nerve damage to vocal cords could be the reason why some people recovering from COVID-19 suffer mysterious bouts of shortness of breath for months after shaking off the coronavirus, researchers say.

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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