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risorius

   Also found in: Wikipedia 0.02 sec.
risorius
[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´rēs),
n a muscle of facial expression in the orofacial re-gion that is used when smiling widely.
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Orbicularis oris, risorius, zygomaticus major and minor muscles b.
A pictorial review of the anatomy and common pathology of the buccal ... by Seelagan, Davindra; Noujaim, Samir E. / Applied Radiology
Fleeting facial expressions are expressed by minute and unconscious movements of facial muscles like the frontalis, corregator, and risorius," Frank explains.
We can tell when you're lying by USA Today (Magazine)
Answer: the Risorius muscles at the corners of your mouth, and the Zygomaticus muscles that raise your facial cheeks.
Is Tapping Your Body Parts Real or Surreal? by H. Bernard Wechsler / Advertising, marketing, public relations community
 
 
 
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