anatomy of middle ear cleft microteaching, 06.03.17, dr.pk
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Dr.P.KARTHIKEYAN, D.L.O.,DNB(ENT),PROFESSOR AND HEAD OF ENT,
MGMCRI, PONDICHERRY.
MIDDLE EAR CLEFT
PARTS OF TYMPANIC MEMBRANE
CONTENTS OF MIDDLE EAR
SURGICAL IMPORTANCE
Layers of TM: outer epithelial layer middle fibrous layer inner mucosal layer Nerve supply: Branches of auriculotemporal nerve. Auricular branch of vagus. Tympanic branch of glossopharyngeal
nerve.
Irregular air filled space within temporal bone between TM laterally and osseous labyrinth medially.
Contains- 3 ossicles 2 muscles chorda tympani tympanic plexus
Anterio inferiorly – Ciliated columnar epithelium with lot of goblet cells and mucous glands.
Postero superiorly – Cuboidal epithelium with less glands.
Epitympanum – Pavement or flat epithelium.
DRAW THE DIAGRAM OF TM AND NAME ITS PARTS.
MEDIAL WALL OF MIDDLE EAR.
CONTENTS OF MIDDLE EAR
CSOM - SIGNIFICANCE
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