tympanic membrane

a conically shaped membrane that separates the external ear from the middle ear and serves to transform the pressure waves of sounds into mechanical vibration of the ossicles. The first ossicle (malleus) is attached to the inner surface of the tympanic membrane. Also called eardrum.

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Psychology term of the day

December 26th 2024

tractotomy

n. the surgical interruption of a nerve tract in the brainstem or spinal cord. One form of tractotomy is of benefit in bipolar disorder that is resistant to other forms of treatment.