Muscle: Nasalis

A. Procerus plus transverse part of nasalis

Origin: Fascia aponeurosis covering nasal bone and lateral nasal cartilage

Insertion: Skin of inferior forehead, between eyebrows

Main Action(s): Depresses medial end of eyebrow; wrinkles skin over dorsum of nose (conveying disdain or dislike)

B. Alar part of nasalis plus levator labii superioris alaeque nasii

Origin: Frontal process of maxilla (inferomedial margin of orbit)

Insertion: Major alar cartilage

Main Action(s): Depresses ala laterally, dilating anterior nasal aperture (i.e., "flaring nostrils," as during anger or exertion)