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TYMPANIC MEMBRANE
Arterial supply
• Outer surface- deep auricular artery, branch from 1st part of maxillary artery
• Inner surface- (A) Ant. Tympanic artery, branch from 1st part of maxillary artery (B) Post. Tympanic artery, branch of stylomastoid artery arising from post. Auricular artery
Nerve supply
• Anterior half of lateral surface-auriculotemporal nerve
• Posterior half of lateral surface- auricular branch of vagus nerve
• Medial surface- tympanic branch of glossopharyngeal through tympanic plexus
EXAMINATION OF TM
PATHOLOGY
Retracted TM
Myringitis bullosa
Herpes zoster oticus (Ramsay Hunt Syndrome)
Myringitis granulosa
Atrophic TM
Tympanosclerosis
Fluid behind TM
Grommet in TM
Ear wax accumulation
Serous otitis media
Schwartze sign (Active otosclerosis)
Perforation of TM
THANK YOU
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