Difference between revisions of "Oropharynx - Anatomy & Physiology"
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*Lamina propria contains aggregates of lymphoid tissue (called tonsils) in several parts of the oropharynx | *Lamina propria contains aggregates of lymphoid tissue (called tonsils) in several parts of the oropharynx | ||
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| + | [[Oral Cavity - Anatomy & Physiology - Flashcards#Oropharynx Flashcards|Oropharynx Flashcards]] | ||
<big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big> | <big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big> | ||
Revision as of 07:43, 26 July 2008
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
- Epiglottis caudally
- Tongue ventrally
- Soft palate dorsally
- 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