Difference between revisions of "Oropharynx - Anatomy & Physiology"
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==Introduction== | ==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 pharynx is the chamber connecting the [[Oral Cavity Overview - Anatomy & Physiology|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. | The oropharynx is the oral section of the pharynx. | ||
| Line 13: | Line 13: | ||
*Epiglottis caudally | *Epiglottis caudally | ||
| − | *Tongue ventrally | + | *[[Oral Cavity - Tongue - Anatomy & Physiology|Tongue]] ventrally |
| − | *Soft palate dorsally | + | *[[Soft Palate - Anatomy & Physiology|Soft palate]] dorsally |
*Endoderm | *Endoderm | ||
Revision as of 08:11, 2 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.
Functional Anatomy
- 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