ANATOMY OF THE EAR  
The Tympanic Membrane

The Tympanic Membrane

Description : The anterior portion of the tympanic membrane derives its nerve supply from the auriculotemporal branch of the trigeminal nerve; the posterior portion of the tympanic membrane and the floor of the external canal are innervated by the auricular branch of the vagus nerve (Arnold's nerve). The medial surface of the tympanic membrane is innervated by the tympanic branch of the glossopharyngeal nerve (Jacobson's nerve).
 

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