Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: External alveolar margins of maxilla and mandible by molar teeth, to maxillary tubercle and pterygoid hamulus and posterior mylohyoid line respectively, then via pterygomandibular raphe between bones
INSERTION: Decussates at modiolus of mouth and interdigitates with opposite side
ACTION: Assists mastication, tenses cheeks in blowing and whistling, assists closure of mouth
NERVE: Buccal branch of facial nerve (VII)

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