Eustachian Tube Sulcus

The groove of the auditory tube (lat. sulcus tubae auris) is a deep groove on the side wall of the pharynx that connects the pharynx with the tympanic cavity. It is an important anatomical structure, as it ensures the passage of air through the auditory tube between the pharynx and the tympanic cavity, which is necessary for the normal functioning of hearing.

The groove of the auditory tube has the shape of a curved tube that starts from the lateral wall of the pharynx and passes through the pharyngotympanic septum. Its length can vary from 1.5 to 3 cm. At the upper border, the groove narrows, forming a narrow opening that connects to the eardrum.

The grooves of the auditory tube are an important element in the anatomy of the human body. They help ensure normal ventilation of the tympanic cavity and thereby help maintain healthy ears.

However, the presence of an Eustachian tube sulcus can be difficult with certain medical conditions, such as adenoids, that can block it. In such cases, surgery may be required to remove the adenoids.

Thus, the groove of the auditory tube is an important anatomical element that ensures normal ventilation of the eardrums and maintenance of healthy ears.

**The groove of the auditory (auditory bone) tube** is a groove that separates the free part of the eardrum from the wall of the auditory canal. Its main landmark is determined posteriorly to the auricular muscle, its digital process and the inferior horn. The groove is crossed by a number of bony points. At its anterior edge there is the conditional center of the elastic cone of the medial muscle of the clivus; directly above it there is an additional auditory point, which, together with the nuclei, contains nerve fibers. However, the key landmark of the groove is the position at its bottom of the inferior horn of the malleus at the connecting points with the lateral process.

With the help of the groove, the sound flow is partially focused between the outer and middle ears. Normally, it is located at an angle of 45 degrees to the axis of the entrance to the ear canal. The indicated angle is formed due to the fenestration (hole)