The term "nervus supratrochlearis" refers to a nerve that originates near the eye and innervates the forehead. The spelling of this word may be challenging due to its length and specialized medical terminology. IPA phonetic transcription can aid in properly pronouncing this word, which would be [ˈnɛrvəs ˌsuːprəˈtroʊklɪərɪs]. This transcription reflects the correct pronunciation of each syllable, and provides guidance for the proper vocalization of vowels, consonants, and stress patterns. With practice, the spelling of this word may become more manageable.
The nervus supratrochlearis, also known as the supratrochlear nerve, is a sensory branch of the ophthalmic division of the trigeminal nerve (cranial nerve V). It is a small nerve located in the forehead region, specifically in the area above the medial part of the eye.
Functionally, the nervus supratrochlearis is responsible for carrying sensory information from the skin on the forehead and scalp in the midline above the eye. It supplies the skin over the forehead region, extending from the top of the forehead towards the medial part of the eyebrow and even slightly beyond it. As a sensory nerve, it transmits signals related to touch, temperature, and pain from these areas to the brain.
The nervus supratrochlearis emerges through the supraorbital foramen or notch and runs anteriorly above the trochlea of the superior oblique muscle. It then branches out into smaller nerve fibers that penetrate the skin to innervate the aforementioned areas. This nerve is often involved in various clinical procedures, such as nerve blocks or anesthesia, when a medical professional needs to numb the forehead area before a surgical intervention or other medical treatments.
Overall, the nervus supratrochlearis is an important component of the sensory system, contributing to the perception and transmission of sensory information from the forehead and scalp to the brain.
Supratrochlear nerve, a branch of the frontal supplying the inner canthus of the eye, the central part of the skin of the forehead, and the root of the nose.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "nervus supratrochlearis" is derived from Latin and can be broken down as follows:
1. Nervus: This Latin word translates to "nerve" in English. It comes from the Proto-Indo-European root "*snew-" meaning "to tremble" or "to shake". It evolved into the Latin word "nervus" with the specific meaning of "sinew" or "cord", and later expanded to include the general meaning of a nerve.
2. Supratrochlearis: This word is a combination of two Latin terms: "supra" and "trochlea".
- Supra: This Latin word means "above" or "over". It is often used to indicate a position that is higher or superior to something else.