Inhalation
Inhalation
Inhalation (pronounced: in-ha-la-tion, from Latin inhalare meaning "to breathe in") is the process of breathing in air or other substances into the lungs. It is a vital part of the respiratory system and is the first step in the process of respiration.
Process
During inhalation, air is drawn into the lungs through the nose or mouth, travels down the trachea, and into the bronchi and bronchioles, finally reaching the alveoli. Here, oxygen from the inhaled air diffuses into the bloodstream, while carbon dioxide, a waste product of metabolism, diffuses from the blood into the alveoli and is exhaled.
Related Terms
- Exhalation: The process of breathing out air or other substances from the lungs.
- Respiration: The overall process of exchanging gases between the body and the environment, which includes inhalation and exhalation.
- Breathing: The process of taking in oxygen and expelling carbon dioxide, which includes both inhalation and exhalation.
- Respiratory system: The group of organs and tissues that enable the body to breathe, which includes the process of inhalation.
Medical Usage
Inhalation is also a common route of administration for many medications, especially those used for conditions of the respiratory system. These medications are often delivered through devices such as inhalers or nebulizers.
See Also
External links
- Medical encyclopedia article on Inhalation
- Wikipedia's article - Inhalation
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