Diseases, Conditions, Syndromes

Patients' geography impacts guideline-concordant COPD care

Geographical challenges to accessing care increase the likelihood of receiving guideline-discordant inhaler regimens following hospitalization for chronic obstructive pulmonary disease (COPD) exacerbation, according to a ...

Psychology & Psychiatry

How we can better manage mental health impacts of bushfires

With an El Niño summer promising hotter and drier conditions for much of Australia, we must rethink how we measure the impact bushfires and other extreme weather events have on our mental health and well-being, according ...

Diseases, Conditions, Syndromes

Mayo Clinic Minute: How to use an asthma inhaler

Summer temperatures, humidity and allergies are triggers for people diagnosed with asthma. These triggers can range from being a nuisance to being life-threatening.

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Inhalation (also known as inspiration) is the movement of air from the external environment, through the air ways, and into the alveoli.

Inhalation begins with the onset of contraction of the diaphragm, which results in expansion of the intrapleural space and an increase in negative pressure according to Boyle's Law. This negative pressure generates airflow because of the pressure difference between the atmosphere and alveolus. Air enters, inflating the lung through either the nose or the mouth into the pharynx (throat) and trachea before entering the alveoli.

Other muscles that can be involved in inhalation include:

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