The tympanic membrane is a membrane inside the human ear and is characterized by the following points: it is relatively thin, has a relatively small volume and has a relatively large role. 1. It is relatively thin. The ear is already very small, so a membrane in the ear is certainly not too big. As the name implies, the tympanic membrane is a layer of membrane in the ear, which is very thin and somewhat translucent, and if you are cleaning your ear, it is easy to break this membrane. 2. The area is relatively small in volume. The eardrum has a certain area and volume, and since its length and width are calculated in millimeters, the area will be very small. Plus its height is also very short, so it volume is also calculated by area can be calculated, so you can get its volume is not very big. 3. The role is relatively large. The tympanic membrane is a membrane of the inner and outer ear. It receives sound from the outside world and provides a sense of hearing through the nervous system. Its principle is that the tympanic membrane vibrates through the stimulation of incoming sound waves, which results in auditory sensation. This is how the tympanic membrane is characterized, but it is also fragile and needs a lot of protection.