Sulcus of the Oculomotor Nerve

The oculomotor sulcus (sulcus nervi oculomotorii) is a groove in the brain that runs along the superior wall of the orbit and separates the frontal and temporal lobes. It is one of the main components of the oculomotor system, which is responsible for the movement of the eyeballs and the regulation of intraocular pressure.

The sulcus of the oculomotor nerve is the result of the confluence of two sulci: superior and inferior. The superior sulcus arises from the apex of the frontal lobe and passes through the orbit, where it merges with the inferior sulcus. The inferior sulcus begins in the temporal lobe and continues through the orbit until it intersects with the superior sulcus, forming the groove of the oculomotor nerve.

The oculomotor nerve is one of seven cranial nerves that are responsible for regulating the movements of the eyes and other facial muscles. It consists of three main branches: oculomotor, trochlear and abducens. The oculomotor branch is responsible for moving the eye up, down, right and left, as well as for regulating intraocular pressure. The trochlear branch controls the lateral movement of the eyeball, and the abducens branch is responsible for the rotation of the eyeball.

The oculomotor nerve groove, which passes through the frontal lobe, regulates the movement of the eye muscles. For example, when the upper part of the sulcus is stimulated, the superior oblique muscle contracts, causing the upper eyelid to rise and the pupil to dilate. When the inferior part of the sulcus is stimulated, the inferior oblique muscle contracts, causing the lower eyelid to droop and the pupil to constrict.

In addition, the oculomotor nerve groove is important for the regulation of intraocular pressure, which occurs during contraction of the ciliary muscle. Intraocular pressure is regulated by special mechanisms that involve changes in the diameter of blood vessels in the eye.

Oculomotor nerve groove

The oculomotor nerve groove is a narrow groove located at the base of the skull that serves as a conduit for the passage of the oculomotor and trochlear nerves. These nerves are important components of the trigeminal nerve that enable eye movements and blinking. The groove is formed from fibrous connective tissue surrounded by adjacent muscle and bone. In this article we will tell you more about the anatomy of the oculomotor nerve and its role in the functioning of our body.

Definition The groove of the oculomotor nerve is a narrow canal located