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depressor septi nasi


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  • Depressor septi nasi is a small vertical bundle of muscular fibers arising from the maxilla superior to the central incisor tooth, which passes upward along the median line of the upper lip to insert into the mobile part of the nasal septum. Action: depresses the septum of the nose, functioning with the alar (dilator) part of the nasal muscle, dilating (widening) the nostrils during deep inspiration. Nerve supply: buccal branch of facial nerve.

    The term atop this page means depressor of the partition of the nose.

    August 2, 2011