How is the inner ear made up?

Our ears are mainly divided intoinner ear, middle ear and outer ear, we don’t talk about anything else today, just talk about the inner ear.

inner earIt consists of three parts: semicircular canal, vestibule and cochlea. The semicircular canal and vestibule are used to maintain body balance, and the cochlea is directly related to hearing. As the head moves, inertia causes lymph flow in the semicircular canal. The membrane fan is composed of a membrane tube and a membrane capsule. The fibers are fixed in the labyrinth, which is filled with perilymph.

inner ear

The lost membrane is divided into an ellipsoidal balloon, a balloon, and a semicircular canal of the membrane to communicate with each other. Elliptic vesicles and balloon plaques have the same structure and consist of struts and hair cells. The cilia of the hair cells are shorter than the ampulla of the ampulla, and there is a gel film on it, called the otolith membrane. This film has a plurality of layers, mainly small particles mainly composed of calcium carbonate crystals, which are formed by the condensation of otoliths and proteins. The role of the balloon and the sac The balloon and the elliptical capsule have the same structure and have otolith membranes, which are collectively called otolith organs.

Both the balloon and the elliptical sac belong to the body’s balanced protective organs, and mainly experience the stimulation of linear acceleration, including gravity acceleration and tangential acceleration. By sensing these stimuli, a series of reflections are produced to maintain the balance of the human body. The balloon has an oval sac, which is approximately perpendicular to the ground. There is a neurosensory epithelial cell with a sense of sand on it. Its specific gravity is2.71The specific gravity of the lymphatic fluid is1.003Mainly feel the static balance and linear acceleration of the head on the frontal plane, affecting the muscle tension of the extremities and abduction of the extremities.

The cilia of the cystic hair cells are buried in the otolith membrane, and the specific gravity of the locus sand is significantly higher than that of the endolymph. When the head performs linear acceleration motion, the direction of the reaction of the sand is shifted, causing the hair cells to bend and cause irritation. The hair cells have a transducing device, which converts the physical stimulation into a nerve action potential through a chemical medium, and is transmitted along the nerve fibers to the vestibular pole centers to sense various head position changes and cause corresponding reactions.

The elliptical capsule has a long round pocket, parallel to the outer semicircular canal. Between the front 1/3 and the balloon point, the angle between the two forms an 70-110 degree, which roughly forms three mutually perpendicular planes. Feel the acceleration of all aspects of space. Mainly affects the static balance and linear acceleration of the sagittal surface head, affecting the tension of the extremities of the extremities. Animal experiments have shown that cystic spots also detect low frequency sounds and infrasound waves.

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