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They secrete into the anal canal via anal ducts which open into the anal crypts along the level of the dentate line. The glands are at varying depths in the anal canal wall, some between the layers of the internal and external sphincter (the intersphincteric plane). The cryptoglandular theory states that obstruction of these ducts, presumably by accumulation of foreign material (e. Fecal bacterial plugging) in the crypts, may lead to perianal abscess and fistula formation. The anal glands (also referred to as the anal sacs) are two sebaceous glands located on either side of the anus that secrete a pungent fluid. They are found in many mammals, including cats, dogs, and bears. An anal abscess is a painful condition in which a collection of pus develops near the anus. Most anal abscesses are a result of infection from small anal glands. In humans, the anus (from latin anus meaning ring, circle) is the external opening of the rectum. Two sphincters control the exit of feces from the body during an act of defecation, which is the primary function of the anus. These are the internal anal sphincter and the external anal sphincter, which are circular musclesthat normally maintain constriction of the orifice and which relaxes as required by normal physiological functioning. The inner sphincter is involuntary and the outer is voluntary. Anal glands in all kinds of animals play a range of diverse functions - providing fat for preening feathers or waterproofing fur, generating distinct scent, even repelling predators. None of the resources i found about human anal glands ever mention their function. Blocked anal gland rockandroll hi there, i have a small lump on the outside of my anus, i have been to the doctors who have advised me that it is a blocked anal gland and that it should go on its own - i still feel a little uneasy about this and cannot find anything on the web with regard to this (mostly seems to be prevalent in dogs!). Anal herpes anal sex may spread the herpes viruses hsv-1 and hsv-2. Symptoms include painful sores around the anus that come and go. Most causes of anal swelling are benign, but some can be more serious. Learn about the causes of anal swelling and what treatment options are available.