Tympanic membrane

Definition

The tympanic membrane, also known as the eardrum, is a thin membrane that separates the external ear from the middle ear. It plays a crucial role in hearing by transmitting sound vibrations to the ossicles.

5 Must Know Facts For Your Next Test

1. The tympanic membrane can serve as a barrier to prevent pathogens from entering the middle ear.
2. Infections of the tympanic membrane, such as otitis media, can lead to hearing loss and may require medical intervention.
3. The normal microbiota of the external auditory canal can affect the health of the tympanic membrane.
4. Perforation or damage to the tympanic membrane can result from infections or physical trauma.
5. Effective treatment for respiratory infections should consider potential complications involving the tympanic membrane.

Review Questions

• What role does the tympanic membrane play in preventing middle ear infections?
• How can respiratory tract infections impact the health of the tympanic membrane?
• What are common causes of perforation in the tympanic membrane?

Related terms

Otitis Media: An infection or inflammation of the middle ear often involving fluid buildup behind the tympanic membrane.

External Auditory Canal: A tube running from the outer ear to the tympanic membrane, involved in sound transmission and housing normal microbiota.

Ossicles: Three small bones (malleus, incus, and stapes) located in the middle ear that transmit sound vibrations from the tympanic membrane to the inner ear.