Anatomy n physiology of pharynx 03
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Transcript of Anatomy n physiology of pharynx 03
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- Fibromuscular tube - Length- Width- Extent
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ACTS AS CROSSROAD:
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LAYERS: MucosaSubmucosaPharynringobasilar
fasciaMuscular coatBaccopharyngeal
fascia Pharyngial plexus
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MUSCLES OF PHARYNX:
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Gate way of tears
Paryngeal diverticula
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Retropharyngeal space. Parapharyngeal space.
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Extent:base of skull to tracheal bifurcation
Location:bet alar fascia n buccopharyngeal fascia covering muscles
Source of infection:parapharyngeal space,parotid,oesophagus,retropharyngeal nodes,spine.
Applied: Retropharyngeal abscess .
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-Extent:base of skull to hyoid bone & submandibular gland
-Location:Buccopharyngeal fascia covering lateral aspect of pharynx medially, n fascia covering pterygoid muscles, mandible n parotid gland laterally
-Sources of infection:peritonsillar abscess, parotid abscess, submandibular gland infection.
-Applied: Parapharynreal abscess.
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Anatomy
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Fossa of Rosenmuller Nasopharyngeal tonsil
(Adenoids) Nasopharyngeal Bursa Rathke’s Pouch Tubal tonsil Sinus of Morgagni Passavant’s Ridge Epithelial lining
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Rathke’spouch
Nasopharyngealbursa
Adenoids
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1. Warm n humidification of air
2. Pressure equilibrium.
3. Elevation of soft palate.
4. Resonating chamber.
5. Draining channel.
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Anatomy
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Ant wall:a) Base of tongue
b) Lingual tonsilsc) Valleculae
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Lat wall:a) Palatine tonsil
b) Anterior pillar(palatoglossal arch)c) Posterior pillar (palatopharyngeal
arch)
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1. Passage
2. Deglutition
3. Speech
4. Appreciation of taste
5. Local defence & immunitypgmedicalworld.com
Applied:children large n regress aft pubertyperitonsillar abscessTonsillectomyreffered pain:glossopharyngeal nerveseptic focus.
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Anatomy
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1. Pyriform sinus (fossa)A. anastetia of subepiglottic part of larynx.B. Reffered pain to ear in ca. of fossa.
2. Post-cricoid region- site for carcinoma
3. Posterior pharyngeal wall-extents from hyoid bone to cricoarytenoid jt.
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POSTERIOR VIEW OF PHARYNX
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1. Pathway
2. Speech n deglutition
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BLOOD SUPPLY:
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VENOUS DRAINAGE
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