Organ of Soshnikovo-Nasova [. Vomeronasale, Pna; O. Vomeronasale (Jacobsoni), Bna; Syn. Yakobsonov Orga]

The vomeronasal organ (Vomeronasale) is a small blind-ending canal in the lower part of the nasal septum, located on the border with the vomer. This organ is a vestige of the olfactory organ and is important for detecting odors.

The vomeronasal organ is located in the lower part of the nasal septum, next to the vomer, and ends blindly. It has a diameter of about 1 mm and a length of about 3 mm. The vomeronasal organ is a blind-ended rudiment of the olfactory organ, which has lost its function in the process of evolution.

The vomeronasal organs are located on either side of the nasal septum and are shaped like a crescent. They are small grooves that connect to the nasal cavity through holes in the nasal septum.

The function of the vomeronasal organ is to provide olfactory sensitivity, which helps a person recognize odors. However, at present, the vomeronasal organ has lost its main function and is a vestigial organ.

In general, the vomeronasal organ is an important anatomical structure that plays an important role in our lives and can be useful for studying the development of the olfactory apparatus in humans.

Jacobson's organ vomer is a nasal canal of the 2nd order, which is the blind ending of the canal of the first order, and also complements the nasal concha. This canal passes in the lateral part of the nasal septum, from above and below - medially. Formed by the fusion of two nasal ducts: anterior and posterior, which flow into the superior duct of the pterygopalatine canal. The canal opens in the common nasal meatus and ends blindly, at the bottom of the nasal cavity at the medial wall, where it is woven into the nasal area. From here it is directed, located from above in the inferolateral sections of the lateral wall of the nose to the very nasal concha, taking up a wide space here. Along its entire length there is a large number of olfactory receptors, the number of which exceeds the number of nerve endings and, in addition, is 3–5 times greater than the number of sensitive olfactory cells of the olfactory epithelium. The middle nasal opening is a common name for several openings: the external nose and the nasal cavity on the outer and inner sides. Different openings have different purposes, one of which is communication between the nasal cavity and the paranasal sinuses using the frontal opening. The openings of the nasal cavity are most often accompanied by an opening through which they communicate with each other.