Oropharynx

Pars oralis pharyngis

RespiratoryOrgansHead

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What it is
The middle part of the pharynx, behind the mouth from the soft palate down to the tip of the epiglottis, containing the palatine and lingual tonsils.
Function
Shared passage for air and food, where the breathing and swallowing pathways cross.
Size
About 4–5 cm high and 4 cm wide.
Clinical note
Loss of muscle tone here during sleep causes snoring and obstructive sleep apnoea; HPV now causes most oropharyngeal cancers in many countries.