Difference between revisions of "Oropharynx - Anatomy & Physiology"

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==Introduction==
 
==Introduction==
  
The [[Pahrynx - Anatomy & Physiology|pharynx]] is the chamber connecting the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]], nasal cavity, [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Larynx - Anatomy & Physiology|larynx]]. The [[Pharynx - Anatomy & Physiology|pharynx]] is divided into the nasal pharynx, oral pharynx and oesophageal/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, [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Larynx - Anatomy & Physiology|larynx]]. The [[Pharynx - Anatomy & Physiology|pharynx]] is divided into the nasal pharynx, oral pharynx and oesophageal/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]].

Revision as of 11:06, 29 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 nasal pharynx, oral pharynx and oesophageal/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)
  • Divided by glossopalatine arch from oesophageal pharynx


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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