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ByDR MITHUN SUTRAVE PG IN ENT ,MRMC, GULBARGA
MODERATOR:DR C B NANDYAL,
PROF ENT,MRMC GULBARGA
OVERVIEW•EMBRYOLOGY• ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
OVERVIEW
•EMBRYOLOGY•ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
Involves three main phases:
1)Development(4th to 8th week)
2)Growth (8th to 16th week)
3)Ossification (16th to 24th week)
4
Embryology
OTIC PLACODES
OTIC PIT
OTOCYST
OTOCYST
VENTRAL SACCULAR PORTION
DORSAL URICULAR PORTION
SACCULE & COCHLEAR DUCT
UTRICLE , SCC & ENDOLYMPHATIC
DUCT
MEMBRANOUS LABYRINTH
DEVELOPMENT OF SACCULE COCHLEA & ORGAN OF CORTI
DEVELOPMENT OF SACCULE COCHLEA & ORGAN OF CORTI
DEVELOPMENT OF SCC AND VESTIBULAR END ORGANS
APPLIED
GENETIC
MICHELS
MONDINI
BING SEIBENMANN
SCHEIBE
USHERS
WAARDENBURG’S
ALPORTS
CHROMOSOMAL TRISOMY 13 AND 18
ACQUIRED
TERATOGENS EXRETINOIC ACID THALODOMIDE
PRENATAL INF RUBELLA CMV TOXOPLASMOSIS
SCHEIBE
MONDINI
USHER
ALPORT
WARDENBURG
OVERVIEW•EMBRYOLOGY
•ANATOMYBONY LABYRINTHMEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
labyrinth - irregular network of passages in which it is difficult to find one's way.
ANATOMY OF INNER EAR
OVERVIEW•EMBRYOLOGY• ANATOMY
BONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
BONY LABYTINTH
Bony labyrinth
vestibule
Bony labyrinthSCC
Bony labyrinthSCC Orientation of semicircular canals in head
Bony labyrinthCOCHLEA
Bony labyrinthCOCHLEA
Bony labyrinthCOCHLEA COCHLEAR IMPLANT
OVERVIEW•INTRODUCTION: HISTORICAL PERSPECTIVE•EMBRYOLOGY• ANATOMYBONY LABYRINTH
MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
MEMBRANOUS LABYRINTH
MEMBRANOUS LABYRINTH COCHLEAR DUCT
MEMBRANOUS LABYRINTHCOCHLEAR DUCT
MEMBRANOUS LABYRINTH COCHLEAR DUCT
OVERVIEW•EMBRYOLOGY• ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
ORGAN OF CORTI
ORGAN OF CORTIORGAN OF CORTI
INNER AND OUTER HAIR CELLS
ORGAN OF CORTIDEITER CELLS
ORGAN OF CORTI
HENSEN, CLAUDIUS AND BOETTCHER CELLS
ORGAN OF CORTI
TECTORIAL MEMBRANE
OVERVIEW•EMBRYOLOGY• ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- ANATOMY OF VESTIBULAR SYSTEM
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
MEMBRANOUS LABYRINTH
&
MEMBRANOUS LABYRINTH UTRICLE SACCULE
&
MEMBRANOUS LABYRINTH
UTRICLE SACCULE
&
MEMBRANOUS LABYRINTH UTRICLE SACCULE
MEMBRANOUS LABYRINTH SACCULE APPLIED ANATOMY
MEMBRANOUS LABYRINTH ENDOLYMPHATIC DUCT AND SAC
MEMBRANOUS LABYRINTH ENDOLYMPHATIC SAC DECOMPRESSION
DONALDSON LINE
ANATOMY OF VESTIBULAR END ORGANS
ANATOMY OF VESTIBULAR END ORGANS CRISTAE
SUPPORTING CELLS
BPPVANATOMY OF VESTIBULAR END
ORGANS
MENIERE’SANATOMY OF VESTIBULAR END
ORGANS
OVERVIEW•EMBRYOLOGY• ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
INNER EAR FLUIDS
HIGH NaLOW K
LOW NaHIGH K
INNER EAR FLUID
OVERVIEW•INTRODUCTION: HISTORICAL PERSPECTIVE•EMBRYOLOGY• ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS
•BLOOD SUPPLY•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
BLOOD SUPPLY
OVERVIEW•INTRODUCTION: HISTORICAL PERSPECTIVE•EMBRYOLOGY• ANATOMYBONY LABYRINTH MEMBRANOUS LABYRINTH- GROSS ANATOMY OF COCHLEA
- MICROSCOPIC ANATOMY OF COCHLEA – ORGAN OF CORTI
- GROSS ANATOMY OF VESTIBULAR SYSTEM- MICROSCOPIC ANATOMY OF VESTIBULAR ENDORGANS
•INNER EAR FLUIDS•BLOOD SUPPLY
•NERVE SUPPLY•SURGICAL APPROACH TO INNER EAR
NERVE SUPPLY OF INNER EAR
VESTIBULOCOCHLEAR NERVE
NERVE SUPPLY OF INNER EAR
Cochlear nerve
• TRANSCANAL APPROACH
• TRANSLABYRINTHINE
SURGICAL APPROACH TO INNER EAR
SURGICAL APPROACH TO INNER EARTRANS LABYRINTHINE APPROACH
