Ear Ossicles

**Definition:** A mobile chain of three small bones (INCUS; MALLEUS; STAPES) in the TYMPANIC CAVITY between the TYMPANIC MEMBRANE and the oval window on the wall of INNER EAR. Sound waves are converted to vibration by the tympanic membrane then transmitted via these ear ossicles to the inner ear.

**Tree numbers:** - A09.246.397.247

**Synonyms:** - Auditory Ossicles