MUSCULUS TRIANGULARIS Meaning and
Definition
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Musculus triangularis, also known as the triangular muscle, is a term used in anatomy to describe a specific muscle located in the head and face region. This muscle is primarily associated with the human mouth and plays an essential role in facial expressions and movements related to the lower lip. Its name "triangularis" is derived from its triangular shape and arrangement.
The musculus triangularis is found in the region surrounding the mouth, specifically extending from the corners of the mouth down towards the lower jaw. It belongs to a group of muscles known as the facial muscles or muscles of facial expression.
The function of the musculus triangularis is to control and assist in the movement of the lower lip. When contracted, it can pull the corners of the mouth down, contributing to facial expressions of sadness, displeasure, or tension. Conversely, its relaxation allows the lips to resume a neutral or upward position, aiding in expressions such as smiling or happiness.
The musculus triangularis receives innervation from the marginal mandibular branch of the facial nerve (cranial nerve VII). It works in coordination with other facial muscles to produce a wide range of expressive movements, which are essential for non-verbal communication and conveying emotions.
Overall, the musculus triangularis is a crucial facial muscle involved in shaping the mouth's appearance and contributing to various facial expressions related to the lower lip.
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M. depressor anguli oris; origin, lower border of lower jaw anteriorly; insertion, blends with other muscles in lower lip near angle of mouth; action, pulls down corners of mouth; nerve supply, facial.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for MUSCULUS TRIANGULARIS
- nusculus triangularis
- kusculus triangularis
- jusculus triangularis
- mysculus triangularis
- mhsculus triangularis
- mjsculus triangularis
- misculus triangularis
- m8sculus triangularis
- m7sculus triangularis
- muaculus triangularis
- muzculus triangularis
- muxculus triangularis
- mudculus triangularis
- mueculus triangularis
- muwculus triangularis
- musxulus triangularis
- musvulus triangularis
- musfulus triangularis
- musdulus triangularis
- muscylus triangularis
Etymology of MUSCULUS TRIANGULARIS
The term "musculus triangularis" is used in anatomy to refer to certain muscles that have a triangular shape.
The etymology of the word "musculus" can be traced back to Latin, where it means "a little mouse". This is because the ancient Romans believed that some muscles appeared similar to small mice moving beneath the skin.
The word "triangularis" is derived from the Latin word "triangulus", which means "triangular". It is composed of two elements: "tri-" meaning "three" and "-angulus" meaning "angle". Thus, "musculus triangularis" refers to a muscle with a triangular shape.
