Corrugator supercilii muscle
Corrugator Supercilii Muscle
The Corrugator Supercilii Muscle (pronunciation: /kɔːˈruːɡeɪtər ˌsuːpərˈsɪliːaɪ ˈmʌsəl/) is a small, narrow, pyramidal muscle located at the medial end of the eyebrow. Its primary function is to pull the eyebrows downward and medially, which causes vertical wrinkles in the skin of the mid-forehead. This is often associated with frowning.
Etymology
The term Corrugator is derived from the Latin word 'corrugare' which means 'to wrinkle'. 'Supercilii', on the other hand, is derived from the Latin 'supercilium' meaning 'eyebrow'. Hence, the term 'Corrugator Supercilii' can be translated as 'the wrinkler of the eyebrows'.
Anatomy
The Corrugator Supercilii Muscle originates from the medial end of the frontal bone, and inserts into the skin of the middle of the eyebrow. It is located beneath the Frontalis and Orbicularis oculi muscles.
Function
The primary function of the Corrugator Supercilii Muscle is to pull the eyebrows downward and medially, which causes vertical wrinkles in the skin of the mid-forehead. This is often associated with frowning or concentrating.
Clinical Significance
Overactivity of the Corrugator Supercilii Muscle can lead to the formation of deep furrows in the forehead. This is often treated with Botox injections, which paralyze the muscle temporarily.
Related Terms
External links
- Medical encyclopedia article on Corrugator supercilii muscle
- Wikipedia's article - Corrugator supercilii muscle
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