risorius
risorius (risō´rē
s),
[risôr′ē·əs]
Etymology: L, ridere, to laugh
one of the 12 muscles of the mouth. A muscular fibrous band, it arises in the fascia over the masseter and inserts into the skin at the corner of the mouth. It acts to retract the angle of the mouth, as in a smile.
risorius (risō´rē
s),n a muscle of facial expression in the orofacial re-gion that is used when smiling widely.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|