Dilator (anatomy)

In anatomy, a muscle that causes an opening to widen is called a dilator (“widener”, short for the dilator muscle ) . Its antagonist is called a sphincter (sphincter) or constrictor . Dilators, where the term appears in the anatomical name , are:

• Musculus dilatator pupillae ("pupil dilator ")
• Musculus dilatator naris apicalis ("nostril widener ")

literature

• Franz-Viktor Salomon: muscle tissue. In: Anatomy for veterinary medicine. 2nd ext. Edition. Enke, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 147-234.