|
The nasalis is a sphincter-like muscle of the nose whose function is to compress the nasal cartilages. It is the muscle responsible for "flaring" of the nostrils. Some people can use it to close the nostrils to prevent entry of water when underwater. It consists of two parts, ''transverse'' and ''alar'': * The ''transverse part'' (compressor naris) arises from the maxilla, above and lateral to the incisive fossa; its fibers proceed upward and medially, expanding into a thin aponeurosis which is continuous on the bridge of the nose with that of the muscle of the opposite side, and with the aponeurosis of the Procerus. It compresses the nostrils and may completely close them. * The ''alar part'' "Dilator nasalis". arises from the maxilla over the lateral incisor and inserts into the greater alar cartilage. Its medial fibres tend to blend with the depressor septi, and has been described as part of that muscle. ==Additional images== File:Sobo 1909 260.png File:Sobo 1909 262.png File:Sobo 1909 264.png File:Sobo 1909 266.png File:Nasalis muscle animation small.gif|Position of nasalis muscle (shown in red). File:Gray157.png|Left maxilla. Outer surface. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「nasalis muscle」の詳細全文を読む スポンサード リンク
|