Corrugator cutis ani muscle

Corrugator cutis ani muscle
Gray's subject #120 425
Origin
Insertion   
Artery
Nerve
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The Corrugator Cutis Ani.—Around the anus is a thin stratum of involuntary muscular fiber, which radiates from the orifice.

Medially the fibers fade off into the submucous tissue, while laterally they blend with the true skin.

By its contraction it raises the skin into ridges around the margin of the anus.

The name of this muscle is primarily limited to older texts.

External links

  • hemorrhoid.net
  • Shafik A (1976). "A new concept of the anatomy of the anal sphincter mechanism and the physiology of defecation. III. The longitudinal anal muscle: anatomy and role in anal sphincter mechanism.". Invest Urol 13 (4): 271–7. PMID 1245390. 

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.


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