label: medial nasal prominence
label_lc: medial nasal prominence
description: "The central area of the two limbs of a horseshoe-shaped mesenchymal swelling that lie medial to the olfactory placode or pit in the future nasal region of the embryo; it joins with the ipsilateral maxillary prominence in the formation of half of the upper jaw, and the nasal tip and philtrum of the upper lip develop from it."