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Oropharynx - Anatomy & Physiology (view source)

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The oropharynx is the oral section of the [[Pharynx - Anatomy & Physiology|pharynx]].

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[[Image:Pharynx Anatomy.jpg|thumb|right|~~150px~~|Pharynx Labelled - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]

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[[Image:Pharynx Anatomy.jpg|thumb|right|250px|Pharynx Labelled - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]

==Structure and Function==

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*Last molar rostrally

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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.

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*[[Epiglottis]] caudally

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*[[Tongue - Anatomy & Physiology|~~Tongue~~]] ventrally

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*[[Soft Palate|~~Soft~~ palate]] dorsally

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*Endoderm

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*Innervated by glossopharyngeal nerve ([[Cranial Nerves - Anatomy & Physiology|CN IX]])

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*Divided by glossopalatine arch from ~~[[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]]~~

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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==

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'''Constrictors'''

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*Hyopharyngeus

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The constrictor muscles include the '''hyopharyngeus''', '''thyropharyngeus''' and '''cricopharyngeus'''.

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*Thyropharyngeus

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*Cricopharyngeus

'''Dilators'''

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*Stylopharyngeus

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The dilator muscle is the '''stylopharyngeus'''.

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'''~~Shorten~~'''

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*Pterygopharyngeus

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~~'''Close Pharyngeal Arch'''~~

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*Palatopharyngeus

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The '''pterygopharyngeus''' muscle shortens the oropharynx and the '''palatopharyngeus''' muscle closes the pharyngeal arch.

==Innervation==

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*Muscles from pharyngeal arch 4 innervated by vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])

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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]]).

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*Stylopharyngeus from pharyngeal arch 3 innervated by glossopharyngeal nerve ([[Cranial Nerves - Anatomy & Physiology|CN IX]])

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~~==[[Oropharynx - Histology|Histology]]==~~

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~~==Test yourself with the Oropharynx flashcards==~~

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~~[[Oral Cavity - Anatomy & Physiology - Flashcards#Oropharynx Flashcards|Oropharynx Flashcards]]~~

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==Links==

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'''Test yourself with the [[Oral Cavity - Anatomy & Physiology - Flashcards#Oropharynx Flashcards|Oropharynx Flashcards]]'''

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'''Click here for information on [[Oropharynx - Histology|histology]]'''

[[Category:Oral Cavity - Anatomy & Physiology]]

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[[Category:To Do - ~~A&P~~]]

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[[Category:To Do - AimeeHicks]]

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