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

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