Pulmonary ventilation
Pulmonary Ventilation (pronounced: pul-mon-ary ven-til-a-tion) is the process of air flowing into the lungs during inspiration (inhalation) and out of the lungs during expiration (exhalation).
Etymology
The term "Pulmonary" is derived from the Latin word 'pulmo', meaning 'lung', and "Ventilation" comes from the Latin 'ventilare', meaning 'to fan'.
Process
Pulmonary ventilation is part of the respiratory cycle, which involves both the inhalation and exhalation of air. It is primarily driven by the diaphragm, a large muscle that separates the chest cavity from the abdominal cavity. When the diaphragm contracts, it creates a vacuum that pulls air into the lungs. When it relaxes, it pushes air out of the lungs.
Related Terms
- Respiratory Cycle: The complete cycle of inhaling and exhaling air.
- Diaphragm (anatomy): The primary muscle used in the process of inhalation.
- Inhalation: The process of breathing in.
- Exhalation: The process of breathing out.
- Tidal Volume: The amount of air which enters the lungs during normal inhalation at rest.
- Minute Ventilation: The total volume of gas entering the lungs per minute.
- Alveolar Ventilation: The process of air exchange occurring in the alveoli in the lungs.
See Also
External links
- Medical encyclopedia article on Pulmonary ventilation
- Wikipedia's article - Pulmonary ventilation
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