Risorius
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(Redirected from Risorius muscle)
| Risorius | ||
|---|---|---|
| Muscles of the head, face, and neck. | ||
| Gray's | subject #108 | |
| Origin: | parotid fascia | |
| Insertion: | modiolus | |
| Blood: | facial artery | |
| Nerve: | facial nerve | |
| Action: | draws back angle of mouth | |
The Risorius arises in the fascia over the Masseter and, passing horizontally forward, superficial to the Platysma, is inserted into the skin at the angle of the mouth.
It is a narrow bundle of fibers, broadest at its origin, but varies much in its size and form.
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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
fr:Muscle risorius
