What is the middle ear?
The middle ear is an air filled with a medium cavity of the ear. It is separated from the outer ear by a tympanic membrane or ears drum and Kochle or inner ear with a membrane with an opening in the center called the oval window. The middle ear transmits the outer acoustic sound to the fluid in the cochle and then makes adjustments so that the change does not sound the sound. It also helps to provide ventilation to the back of the neck and nose. Malleus's hammer -shaped bone is associated with an anvil -shaped inc. The Incus is associated with a bone in the shape of a stirrup, which is the smallest bone in the human body. Together there are three bones known as an asikular chain. The staples bone base is connected to the membrane of the oval window. The sound is overwhelmed by the sequence This allows the proper transmission of sound pressure from the middle ear to the cochle, vibrating the osicles vibrations through the oval window. It serves as a pressure amplifier for sound waves. The process allows the sound to enter the liquid environment of the inner ear.
Another key part of the middle ear function is the eustachian tube, a tube made of cartilage and membrane that passes from the cavity of the middle ear to the nosopharynx or nose and the rear of the neck. The Eustachia pipe also provides an air pressure space to be leveled between the neck and the middle ear. Healthy Eustachan tube is a way that provides protection and nutrition to all structures in the middle ear. The Eustachian tube passes through the skull time bones and reaches the mastoid line, which serves as a place to connect muscles.
near Nasopharynx, cells of the Eustachian tube, are lined with fine projections similar to hair called cilia. As the membrane extends through the middle ear, the cells turn into a high column structure. After reaching the mastoid, the membrane is composed of narrowly packed cube -shaped cells.
Ventilation is another important function of the middle ear. Eustachian tube opens and closes as needed to allow airinto the cavity of the middle ear. When the muscle is a dilated tubae muscle, the tube opens. Incorrect ventilation can lead to a cleft palate, tumors, neuromuscular defects and craniophial trauma.