nar·es / ˈne(ə)rēz/ • pl. n. (sing. nar·is / ˈne(ə)ris/ ) Anat. & Zool. the nostrils.DERIVATIVES: nar·i·al / -ēəl/ adj.
nares (nostrils) The paired openings of the nasal cavity in vertebrates. All vertebrates have external nares, which open to the exterior; in some species these are situated on a nose. Internal nares (or choanae) are present only in air-breathing vertebrates (including lungfish) and open into the mouth cavity. In mammals they open posteriorly, beyond the secondary palate.
nares (nair-eez) pl. n. (sing. naris) openings of the nose. external (or anterior) n. the nostrils, which lead from the nasal cavity to the outside. internal (or posterior) n. (choanae) the openings leading from the nasal cavity into the pharynx.
nares See NASAL CAVITY.
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