What exactly is the structure of the ear?
Disease description:
Recently, my ears have been ringing constantly, and I occasionally experience muffled hearing. I became especially curious: what do the inside of ears actually look like? Why does something going wrong cause so much discomfort?
Doctor's answer (1)
Dr. Lu Cheng
In general, the ear structure is mainly divided into three parts: the outer ear, the middle ear, and the inner ear.
The outer ear consists of the auricle (pinna) and the external auditory canal (ear canal). The auricle is shaped like a funnel and primarily functions to collect sound waves. The external auditory canal is a curved tube connecting the auricle to the eardrum, measuring approximately 2.5 to 3.5 centimeters in length. The middle ear lies between the eardrum and the inner ear and contains three small bones—the malleus, incus, and stapes—along with the air-filled tympanic cavity (middle ear cavity). Its primary function is to amplify sound vibrations and transmit them to the inner ear. The inner ear contains the cochlea, vestibule, and semicircular canals. The cochlea is responsible for converting sound waves into neural impulses that are sent to the auditory center. The vestibule and semicircular canals are involved in regulating body balance.
This intricate structure of the ear enables the body not only to hear sounds but also to perceive direction, distance, and environmental changes, making it an important bridge for communication between the body and the external world. However, the ear is also very delicate, and excessive noise, infections, trauma, and other factors may cause damage. Therefore, it is recommended to take precautions to protect hearing and undergo regular ear health checkups.
