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Oropharynx - Anatomy & Physiology (view source)
Revision as of 08:57, 15 September 2010
, 08:57, 15 September 2010no edit summary
The oropharynx is the oral section of the [[Pharynx - Anatomy & Physiology|pharynx]].
The oropharynx is the oral section of the [[Pharynx - Anatomy & Physiology|pharynx]].
[[Image:Pharynx Anatomy.jpg|thumb|right|150px|Pharynx Labelled - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]
[[Image:Pharynx Anatomy.jpg|thumb|right|250px|Pharynx Labelled - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]
==Structure and Function==
==Structure and Function==
The last molar borders rostrally and the [[Epiglottis]] caudally. The [[Tongue - Anatomy & Physiology|tongue]] borders ventrally and the [[Soft Palate|soft palate]] dorsally. It is derived from endoderm.
The oropharynx is innervated by the '''glossopharyngeal nerve''' ([[Cranial Nerves - Anatomy & Physiology|CN IX]]). It is divided by the '''glossopalatine arch''' from the [[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]].
==Musculature==
==Musculature==
'''Constrictors'''
'''Constrictors'''
The constrictor muscles include the '''hyopharyngeus''', '''thyropharyngeus''' and '''cricopharyngeus'''.
'''Dilators'''
'''Dilators'''
The dilator muscle is the '''stylopharyngeus'''.
'''Shorten'''
The '''pterygopharyngeus''' muscle shortens the oropharynx and the '''palatopharyngeus''' muscle closes the pharyngeal arch.
==Innervation==
==Innervation==
Muscles from the pharyngeal arch are innervated by the '''vagus nerve''' ([[Cranial Nerves - Anatomy & Physiology|CN X]]). The stylopharyngeus from the pharyngeal arch is innervated by the '''glossopharyngeal nerve''' ([[Cranial Nerves - Anatomy & Physiology|CN IX]]).
==Links==
'''Test yourself with the [[Oral Cavity - Anatomy & Physiology - Flashcards#Oropharynx Flashcards|Oropharynx Flashcards]]'''
'''Click here for information on [[Oropharynx - Histology|histology]]'''
[[Category:Oral Cavity - Anatomy & Physiology]]
[[Category:Oral Cavity - Anatomy & Physiology]]
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