NERVUS TENTORII Meaning and
Definition
-
The nervus tentorii, also known as the tentorial nerve, is a branch of the trigeminal nerve, specifically the ophthalmic division (V1). It is a small sensory nerve that innervates certain regions of the dura mater, the tough outer covering of the brain.
Originating in the trigeminal ganglion, the nervus tentorii emerges from the middle cranial fossa through the cavernous sinus. It then passes through the superior orbital fissure, a bony opening in the skull, to reach the tentorium cerebelli. The tentorium cerebelli is a fold of the dura mater that horizontally separates the cerebrum from the cerebellum within the posterior cranial fossa.
The nervus tentorii supplies sensory fibers to the posterior surface of the tentorium cerebelli and the adjacent meninges. It carries sensations of pain, touch, and temperature from this region to the trigeminal sensory nucleus in the brainstem. These sensory inputs allow for the brain to perceive any potential pathology or trauma affecting the tentorium cerebelli and its surrounding structures.
Damage or irritation of the nervus tentorii can lead to various symptoms, such as headaches or other forms of referred pain in the region innervated by the nerve. Additionally, any conditions affecting the trigeminal nerve and its associated branches can potentially impact the function of the nervus tentorii.
-
Tentorial nerve, a branch of the n. ophthalmicus supplying the tentorium.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for NERVUS TENTORII
Etymology of NERVUS TENTORII
The word "nervus tentorii" has Latin roots.
The term "nervus" means "nerve" in Latin. It is derived from the Proto-Indo-European root *snēw- which means "to tie, spin, sew". This root later evolved into the Latin word "nervus", referring to a tendon or sinew and subsequently extended to denote a nerve.
The word "tentorii" is the genitive singular form of "tentorium", which is a Latin term meaning "tent-like covering". In anatomy, the "tentorium cerebelli" is a fold of the dura mater that separates the cerebrum from the cerebellum in the brain.
So, "nervus tentorii" refers to the nerve related to the tentorium cerebelli.
