Anatomy Explorer
Risorius Muscle
by
Written by
Tim Taylor
Anatomy & Physiology Senior Writer
Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.
Last updated: Feb 11th, 2026
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The risorius muscle draws the angle of the mouth outward and is commonly called the laughing muscle.
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