Accessory Oculomotor Nerve Nucleus

The nucleus of the oculomotor nerve, or accessory nucleus (lat. nucleus accessorius nervi oculomotorii) is part of the oculomotor nucleus, which is located in the pons of the brain. This nucleus is responsible for the movement of the eyeballs, as well as the regulation of the lacrimal gland and the outflow of tears.

The accessory nucleus of the oculomotor nerve is one of three nuclei in the oculomotor nerve system. It is located in the pons of the brain, between the medulla oblongata and the cerebellum. The nucleus contains about 1,000 neurons that transmit signals from the brain to the eye muscles.

The functions of the accessory oculomotor nucleus include:

1. Regulating the movement of eye muscles such as the upper and lower eyelids, the muscles of the eyeball, the muscles that control the movement of the eyeballs up, down, left and right.
2. Regulation of the lacrimal gland, which is responsible for the production and outflow of tear fluid.
3. Participation in the regulation of muscle tone and coordination of movements.
4. Participation in the processes of perception of light and darkness.
5. Control of the activity of other nerve centers associated with the movement of the eye muscles and tear fluid.

The Westphal-Edinger nucleus is another name for the nucleus of the oculomotor accessory nerve. It was first described by the German neurologist Alexander Westphal in 1892 and later renamed the Yakubovich nucleus in honor of the Russian scientist Alexander Yakubovich, who also studied the functions of this nucleus.

Dysfunction of the nucleus of the accessory oculomotor nerve can lead to various eye diseases. For example, if the nucleus is damaged, strabismus, double vision, difficulty moving the eyeballs, and other visual impairments may occur.

For the treatment of diseases associated with dysfunction of the oculomotor nucleus

The nucleus of the oculomotor accessory nerve is ner-Bo os-LoVitSOLISOYA IMSPRIY) addlttivus. The Tse L) ioe (periary-Tnic) core of O. accesso-rius was isolated by Berishek in 1912, Gierke et al. (1955). The nucleus is located posterior to the lower 2/3 of the pons and below the olivary pons on the outer side of the midline; above the line connecting the posterointernal ends of the processes of the eighth and lower pairs of cranial nerves. The surface of the kernel is convex, sometimes has two longitudinal grooves. On a cross section, the central parts have a somewhat flattened appearance, bordering on the peri-arterial shade of the periarticular membrane (horse), and the peripheral part of the nucleus is separated from the olive by the preganglionic white substance. Functions of the nucleus: excitatory effect - contraction of the external muscles of the eye, increased tone of the ciliary muscles, dilation of the pupil with subsequent stimulation of the pupillary reflex, raising and concentrating the gaze.