Depressor septi nasi

  • The depressor septi nasi (also depressor septi nasi muscle, latin: musculus depressor septi nasi) is a facial muscle of the lower nose region.

    The depressor septi nasi originates from the incisive fossa of the maxilla and inserts into the nasal septum and the posterior aspect of the alar part of the nasalis muscle.

    Upon contraction the depressor septi nasi depresses the nasal septum, and pulls the wings of the nose downward, constricting the aperture of the nostrils, thus working similarly as the alar part of the nasalis muscle.

    The depressor septi nasi receives nerve supply from the buccal branch of the facial nerve (CN VII).