Anterior Perspective of the Alar Nasalis Muscle

Description

Centered on the external nose, the nasalis muscle is isolated in red, with its alar part (alar nasalis) positioned inferolaterally along the ala nasi and the transverse part spanning more superiorly across the dorsum toward the nasal bridge. Medial fibers approach the midline over the nasal cartilages, while lateral fibers blend with adjacent facial musculature near the nasolabial region. Surrounding context includes orbicularis oculi encircling the palpebral fissures and orbicularis oris forming a sphincter around the oral fissure, establishing clear superior and inferior reference points. Symmetry is maintained across both sides of the male face. Functionally, the alar nasalis sits at the intersection of expression and airway mechanics, acting on the alar cartilage and skin to influence nostril shape during sniffing, forced inspiration, and facial animation. Small muscle, measurable effect. This anterior perspective helps distinguish nasalis from nearby elevator and depressor groups that alter the nasal base and upper lip, a distinction that matters when teaching patterning of perinasal wrinkles and when mapping injection or surgical planes in rhinoplasty, alar base reduction, or reconstructive work after Mohs excision. Use this plate in head and neck anatomy labs, facial expression modules for dental and medical curricula, and operative teaching materials that need accurate surface-to-muscle correlation around the ala of the nose. It also suits ENT and plastic surgery publications discussing nasal valve function, alar retraction, or perinasal flap design. Anatomical accuracy verified by SciePro's Medical Advisory Board.