Century Dictionary and Cyclopedia
- n. In human anatomy, a small muscle connecting the upper lip with the septum of the nose, being one of a pair of muscular slips given off from the orbicularis oris. The interval between them corresponds to the vertical depression seen on the surface between the nose and the lip. Also called nasalis labii superioris, depretsor septi, mobilis narium, and depressor apicis narium.
- n. The proper lifter of the nostril and upper lip, usually called levator labii superioris alæque nasi. Coues and Shute. Also nasilabialis. See first cut under muscle.
“In the upper lip these consist of two bands, lateral and medial, on either side of the middle line; the lateral band (m. incisivus labii superioris) arises from the alveolar border of the maxilla, opposite the lateral incisor tooth, and arching lateralward is continuous with the other muscles at the angle of the mouth; the medial band (m. nasolabialis) connects the upper lip to the back of the septum of the nose.”
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