Inhalation

Inhalation is the movement of air from the external environment, through the airways, into the alveoli during breathing.

Related Topics:
Airway - Alveoli - Breathing

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Inspiration 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.

Related Topics:
Diaphragm - Intrapleural space - Boyle's Law - Nose - Mouth - Pharynx - Throat

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Random nit pick: It is more correct to imagine boyle's law, not as a negative "sucking", but the pushing of air from a higher pressure to a lower pressure.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Random nit pick2: I was redirected here rom "sniffing", I wish to contribute an entry on "butt" sniffing. I realise it is a rude word, but wish those who are curious as to what butt sniffing is exactly, to be able to find it for themselves on wikipedia.org.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~