Pectinate line
Pectinate Line
The Pectinate Line (pronunciation: pek-ti-nate line) is a significant anatomical landmark in the human body, specifically within the anal canal.
Etymology
The term "Pectinate" is derived from the Latin word "pecten", which means "comb". This is in reference to the comb-like appearance of the line.
Definition
The Pectinate Line, also known as the Dentate Line, is a horizontal line that divides the upper two-thirds and lower one-third of the anal canal. It is the point where the simple columnar epithelium of the rectum changes to the stratified squamous epithelium of the anus.
Clinical Significance
The Pectinate Line is of clinical importance as it is the dividing line for the dual blood supply, lymphatic drainage, and nerve supply of the anal canal. Conditions such as hemorrhoids, anal fissures, and anal cancer can be better understood and treated by considering the Pectinate Line.
Related Terms
- Anal Canal: The terminal part of the large intestine.
- Hemorrhoids: Swollen veins in the lower part of the anus and rectum.
- Anal Fissures: Small tears in the lining of the anus.
- Anal Cancer: A rare type of cancer that occurs in the anal canal.
External links
- Medical encyclopedia article on Pectinate line
- Wikipedia's article - Pectinate line
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