Physiology Of Hearing
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Transcript of Physiology Of Hearing
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The Academy for Medical Sciences & Technology
MR.SHARFI,ABD ELGADIR MD.OTOLARYNGOLOGYAss.Prof. O I U
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•Physiologically the ear is divided into two-:•The conductive system-:
• EAC.TM,OSSICLES,ET,INNER EAR FLUID.•Perceiving system-:
• COCHLEAR ,8TH NERVE & CENTRAL SYSTEM.
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PROBLEMS
•SMELL:
•HYPEROSMIA
•HYPOSMIA
•ANOSMIA
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COMMON CAUSES
1-OLD AGE
2-COMMON DISEASES-SYSTEMIC
(DM &HYPERTENSION)AND LOCAL
3-RADIOTHERAPY
4 -DRUGS
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HEARLING LOSS
•TWO TYPES
• 1-CONDUCTIVE
•2 -AND SNHL
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CONDUCTIVE LOSS COMMON CAUSES?
• 1-CONGENITAL
• 2-ACQUIRED
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•Causes of senserineural deafness-:
Viral (mumps)Bacterial (syphilis,labyrinithitis,)Presbyacusis.
OtotoxicityOtosclerosisSudden SNHL(idiopathic,surgery,H.trauma,
Noise induced HLcogenital
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جزيال جزيال شكرا شكرا