The tympanic membrane, commonly known as the eardrum, is a thin, cone-shaped membrane located in the middle ear. It plays a crucial role in hearing by vibrating in response to sound waves. These vibrations are then transmitted to the tiny bones in the ear, known as the ossicles, which amplify the sound and send it to the inner ear. In addition to its role in hearing, the tympanic membrane also helps protect the inner ear from foreign objects and infections. It separates the outer ear from the middle ear, ensuring that only sound waves can pass through while keeping harmful substances out.