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It is one of the muscles of facial expression, so the zygomaticus major m. is innervated by the facial n. (CN VII). The zygomaticus major m. draws the corner of the mouth upward and backward, as in smiling.
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It is one of the muscles of facial expression, so the zygomaticus major m. is innervated by the facial n. (CN VII). The zygomaticus major m. draws the corner of the mouth upward and backward, as in smiling.