Window (Fenestra, Oval Window)

(in anatomy) an opening resembling a window. The oval window (fenestra ovalis) (or window of the vestibule (fenestra vestibuli)), closed by the base of the stapes (ed.), is an opening between the middle ear and the vestibule of the inner ear. The round window (fenestra rotunda) (or window of the cochlea (fenestra cochleae)) is an opening closed by the secondary tympanic membrane (ed.), separating the tympanic cavity from the scala tympani of the inner ear. Sound vibrations enter the cochlea through the cochlear window.

A window (fenestra) is an opening in an organ or tissue that allows substances or gases to pass through it. In anatomy, there are several types of windows that perform different functions. One of them is the fenestra, which resembles a window and is located in the middle ear. This is the opening between the middle ear and the inner ear, closed by the oval window (fenestra ovalis).

The middle ear window (fenestra media) is one of the most important windows in the body. It allows sound vibrations to pass from the outer ear to the inner ear. The window of the middle ear is a round hole closed by the eardrum (membrana tympani). The eardrum is circular in shape and is located on the border between the outer and middle ear. It performs the function of transmitting sound vibrations from the outer ear to the inner ear.

The window of the vestibule or oval window (fenestra vestibuli) is located between the middle ear and the vestibular system of the inner ear. It is covered by the base of the stapes and ensures the transmission of signals from the vestibular apparatus to the inner ear. The window of the vestibule plays an important role in maintaining balance and orientation in space.

The round window or window of the cochlea (fenestra rota) is located between the tympanic cavity and the scala tympani of the inner ear. This window is covered by the secondary tympanic membrane and allows sound waves to pass from the tympanic cavity to the inner ear, where they are received by the cochlea.

Thus, the window is an important element in human anatomy and physiology. They ensure the transfer of various substances and gases between various organs and tissues, and also perform important functions in the body, such as transmitting sounds and maintaining balance.