Compressor naris muscle
Updates to Article Attributes
Body
was changed:
Compressor naris forms the transverse component of nasalis muscle, is one of the muscles of the nose, a subset of the muscles of facial expression.
Summary
- origin: frontal process of maxilla
- insertion: medial insertion into a transverse aponeurosis
- innervation: facial nerve (VII)
- action: sphincteric narrowing of the nostril
Gross anatomy
Origin
- fibres originate from the frontal process of the maxilla
Insertion
- fibres from the muscle on each side pass medially, forming a thin continuous transverse aponeurosis across the dorsum of the nose
Arterial supply
Venous drainage
Innervation
- buccal nerve (branch of facial nerve (VII))
Action
Its overall action is to oppose the dilator naris and narrow the anterior nares
- pulls the nasal ala inwards closer to the nasal septum
- pulls the nasal cartilages towards the upper lip
Variant anatomy
Muscles of the nose vary in size between individuals and may be entirely absent 1.
-</ul><h4>Gross anatomy</h4><h5>Origin</h5><ul><li>fibres originate from the frontal process of the maxilla</li></ul><h5>Insertion</h5><ul><li>fibres from the muscle on each side pass medially, forming a thin continuous transverse <a href="/articles/aponeurosis">aponeurosis</a> across the dorsum of the nose</li></ul><h4>Arterial supply</h4><ul><li><a href="/articles/facial-artery">facial artery</a></li></ul><h4>Venous drainage</h4><ul><li><a title="Facial vein" href="/articles/facial-vein">facial vein</a></li></ul><h4>Innervation</h4><ul><li>buccal nerve (branch of <a href="/articles/facial-nerve">facial nerve (VII)</a>)<strong></strong>- +</ul><h4>Gross anatomy</h4><h5>Origin</h5><ul><li>fibres originate from the frontal process of the maxilla</li></ul><h5>Insertion</h5><ul><li>fibres from the muscle on each side pass medially, forming a thin continuous transverse <a href="/articles/aponeurosis">aponeurosis</a> across the dorsum of the nose</li></ul><h4>Arterial supply</h4><ul><li><a href="/articles/facial-artery">facial artery</a></li></ul><h4>Venous drainage</h4><ul><li><a href="/articles/facial-vein">facial vein</a></li></ul><h4>Innervation</h4><ul><li>buccal nerve (branch of <a href="/articles/facial-nerve">facial nerve (VII)</a>)<strong></strong>
-<li>pulls the nasal cartilages towards the upper lip</li>- +<li>pulls the <a title="Nasal cartilages" href="/articles/nasal-cartilages">nasal cartilages</a> towards the upper lip</li>
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