Procerus muscle
Procerus Muscle
The Procerus muscle (pronounced proh-SEHR-uhs) is a small pyramidal slip of muscle located at the root of the nose. It is one of the muscles involved in facial expression.
Etymology
The term "Procerus" is derived from the Latin word "procerus," which means "tall" or "elongated." This is likely in reference to the muscle's long, slender shape.
Anatomy
The Procerus muscle originates from the lower part of the nasal bone and the adjacent part of the upper lateral nasal cartilage. It extends up to the skin of the lower forehead between the eyebrows, where it intermingles with the frontalis muscle.
Function
The primary function of the Procerus muscle is to pull the skin between the eyebrows downward, which produces horizontal wrinkles across the bridge of the nose. This is often associated with frowning.
Related Terms
- Facial muscles: The group of muscles in the front of the neck that control facial expressions.
- Frontalis muscle: The muscle of the forehead which moves the forehead skin.
- Nasalis muscle: The muscle which compresses the bridge and the sides of the nose.
- Orbicularis oculi muscle: The muscle that closes the eyelids.
See Also
External links
- Medical encyclopedia article on Procerus muscle
- Wikipedia's article - Procerus muscle
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