MEDILOGIN: Medical Academy - Did you already know which muscles cause wrinkles in the glabella? Here you see the glabella at maximum muscle contraction, showing what are popularly referred to as frown
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Corrugator supercilii | Encyclopedia | Anatomy.app | Learn anatomy | 3D models, articles, and quizzes
Fig. 21 : Showing the antagonism between m. corrugator supercilii and m. frontalis in the same individual. - NYPL Digital Collections
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