MUSCULUS FRONTALIS Meaning and
Definition
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Musculus frontalis, typically known as the frontalis muscle, is a muscle located on the front part of the head, specifically on the forehead. It is one of the muscles responsible for facial expression and contributes to various movements in this region.
The frontalis muscle is a thin, broad muscle that spans from the eyebrows to the hairline. It is also connected to the occipitalis muscle at the back of the head. Together, these two muscles form the epicranial aponeurosis, a tough fibrous layer that covers the top of the skull.
The primary function of the musculus frontalis is to elevate the eyebrows and wrinkle the forehead vertically. It enables individuals to show surprise, concern, or express emotions like skepticism or disbelief. When contracted, the muscle shortens and pulls the skin upwards, causing the forehead to wrinkle and the eyebrows to move upward. These movements contribute to conveying emotions and expressions during social interactions.
The frontalis muscle is under voluntary control and is innervated by the facial nerve (cranial nerve VII). It works in coordination with other muscles of facial expression, such as the orbicularis oculi around the eyes and the corrugator supercilii just above the nose.
In summary, the musculus frontalis is responsible for elevating the eyebrows and vertical wrinkling of the forehead, contributing to various facial expressions and emotional communication.
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Anterior portion of epicranius; origin, frontal bone above supraorbital line; insertion, galea aponeurotica; action, pulls scalp forward, wrinkles forehead; nerve supply, facial.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for MUSCULUS FRONTALIS
- musculus frontalic
- musculus frontaliq
- musculus frontalir
- m usculus frontalis
- mu sculus frontalis
- mus culus frontalis
- musc ulus frontalis
- muscu lus frontalis
- muscul us frontalis
- musculu s frontalis
- musculus f rontalis
- musculus fr ontalis
- musculus fro ntalis
- musculus fron talis
- musculus front alis
- musculus fronta lis
- musculus frontal is
- musculus frontali s
Etymology of MUSCULUS FRONTALIS
The word musculus frontalis is derived from Latin. Here is the breakdown:
- Musculus is the Latin word for muscle.
- Frontalis is derived from the Latin word frons, which means forehead or front. It is used as an adjective to describe something related to or located in the forehead.
Therefore, musculus frontalis can be translated as forehead muscle.
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