Anal sinus - Definition
These are furrows in the anal canal. In other words, these are the spaces between the various membranes that make up the anus and the rectum.
They are also referred to as "Rectal sinuses" and "Sinus anales" (Latin). Sometimes, they are also known as Anal crypts.
Anal sinus - Location
As aforesaid, they can be found in the anal canal. They end below the canal in tiny vale-like folds known as anal valves.
Anal sinus - Function
These structures are composed of tissue folds that seperate the rectal columns from each other. Their presence is not usually of any great importance to humans.
Anal sinus - Disorders
These sinuses may sometimes get infected or affected by colorectal cancer as is the case with any region of the anal cavity. If fecal matter is allowed to persist for too long in the rectum, bacterial growth may occur and the sinuses can get infected as a consequence. Painful sores or abscess can arise as a consequence.
Anal sinus - Pictures
The images here show the location and appearance of the anal sinuses in the body of humans.
Back to Digestive System