What divides the outer ear from the middle ear?
Tympanic membrane (eardrum)
Auricle (pinna)
Vestibule
Cochlea

The tympanic membrane, commonly known as the eardrum, serves as the boundary between the outer ear and the middle ear. This delicate membrane vibrates in response to sound waves, translating those vibrations into mechanical signals for the tiny bones of the middle ear to amplify and transmit to the inner ear.

Interestingly, the ear isn’t just for hearing; it plays a vital role in balance too! The inner structures, including the cochlea and vestibule, help your brain maintain spatial orientation and balance, making ear health crucial not just for listening but also for staying upright and coordinated.