
Originally Posted by
DrJ
Hemmorhoids are vericosities of the anal veins. These are caused by increased venous pressure and/or incompetent veinous walls. The act of anal filling would be expected to compress the vericose veins much as support hose would do in the lower extremities. The increase in veinous pressure required to cause or bring about hemmorhoids occurs above the venous plexus by increased intra-abdominal pressure resulting from such etiologies as pregnancy, obesity, tumor, blood clot or obstruction, congestive heart failure(especially right heart), etc. The act of anal sex would be extected to act as a pessary or compress veins rather than engorge them. Bleeding or damage from anal sex would be due to lack of (a) adequate lubrication and (b) lack of sufficient time to relax internal and external anal sphincter muscles.These factors would be doubly important in the receiver if they already have hemmarhoids.
Sacral innervation to the rectal and anal area is greater than the vagina. The G-spot may also end up in the perineum or rectal anterior wall embriologically. These factors contribute to the known incidence of orgasm directly from anal sex, and the increase in intensity which can occur from same.
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