Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Posterior aspect of cricoid cartilage
INSERTION: Muscular process of arytenoid cartilage
ACTION: Abducts and laterally rotates arytenoid cartilage (opens rima glottidis)
NERVE: Recurrent laryngeal branch of vagus nerve (X)

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