Difference between revisions of "Oropharynx - Anatomy & Physiology"

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==Introduction==
 
==Introduction==
  
The [[Pharynx - Anatomy & Physiology|pharynx]] is the chamber connecting the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]], [[Nasal cavity - Anatomy & Physiology|nasal cavity]], [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Larynx - Anatomy & Physiology|larynx]]. The [[Pharynx - Anatomy & Physiology|pharynx]] is divided into the [[Nasopharynx - Anatomy & Physiology|nasopharynx]], oropharynx and [[Larynx - anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]] which all have different functions, innervation and develope differently.
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The [[Pharynx - Anatomy & Physiology|pharynx]] is the chamber connecting the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]], [[Nasal cavity - Anatomy & Physiology|nasal cavity]], [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Larynx - Anatomy & Physiology|larynx]]. The [[Pharynx - Anatomy & Physiology|pharynx]] is divided into the [[Nasopharynx - Anatomy & Physiology|nasopharynx]], oropharynx and [[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]] which all have different functions, innervation and develope differently.
  
 
The oropharynx is the oral section of the [[Pharynx - Anatomy & Physiology|pharynx]].
 
The oropharynx is the oral section of the [[Pharynx - Anatomy & Physiology|pharynx]].
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*Innervated by glossopharyngeal nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN IX]])  
 
*Innervated by glossopharyngeal nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN IX]])  
  
*Divided by glossopalatine arch from [[Larynx - anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]]
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*Divided by glossopalatine arch from [[Larynx - Anatomy & Physiology#Laryngeal Pharynx|laryngeal pharynx]]
  
  

Revision as of 19:51, 30 July 2008

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Introduction

The pharynx is the chamber connecting the oral cavity, nasal cavity, oesophagus and larynx. The pharynx is divided into the nasopharynx, oropharynx and laryngeal pharynx which all have different functions, innervation and develope differently.

The oropharynx is the oral section of the pharynx.

Structure and Function

  • Last molar rostrally
  • Endoderm
  • Innervated by glossopharyngeal nerve (CN IX)


Musculature

Constrictors

  • Hyopharyngeus
  • Thyropharyngeus
  • Cricopharyngeus

Dilators

  • Stylopharyngeus

Shorten

  • Pterygopharyngeus

Close Pharyngeal Arch

  • Palatopharyngeus


Innervation

  • Muscles from pharyngeal arch 4 innervated by vagus nerve (CN X)
  • Stylopharyngeus from pharyngeal arch 3 innervated by glossopharyngeal nerve (CN IX)


Histology

  • Stratified squamous epithelium
  • Keratinised in ruminants
  • Lamina propria contains aggregates of lymphoid tissue (called tonsils) in several parts of the oropharynx

Links

Oropharynx Flashcards

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