Your arse is just the beginning - or rather the end - of your digestive system, which extracts nutrients and goodness from the food we eat. What's left is waste which we get rid of as shit. Many people believe that the digestive system is just a small tube linked to the stomach where shit sits waits for the rectal express to the toilet. In fact, from mouth to arsehole, it's a nine metre (30 foot) rubber-like tube, lined with muscles which massage the food and waste along, regulated by a series of locks and chambers.
The stomach
After swallowing, food travels down the oesophagus to the stomach - a 'J' shaped organ about 30cm long - where it stays for up to 6 hours. Here, acids and enzymes digest food until it becomes a semi-liquid soup which you have probably seen as vomit (with diced carrots). The speed at which food moves on from the stomach depends on what you've eaten and what's going on further down the line. Nerves which connect the arse to the stomach transmit messages to control the flow of food and waste. For example, you may experience discomfort or pains in your stomach if you are constipated or being fucked or fisted. Conversely, when you eat, you often want to go for a shit.
The small intestine
In a semi-liquid form, food is passed along the duodenum to the next stage of digestion: the small intestine, a long rubbery tube, 2.5cm (1") across and some 6.5m (21') long. It's here that the nutrients and goodness in food are extracted.
The large intestine
What remains resembles a rich vegetable soup, which passes into the large intestine. This is rather like an inverted 'U' shaped pipe which joins the small intestine at the bottom right-hand corner, near your appendix. This is made up of the ascending, transverse, descending, and sigmoid colons. It is here that the waste becomes more solid as the water and salt is absorbed back into the body. The sigmoid colon is best described as the final packaging and holding bay for shit. The rectum is the dispatch area and the anal canal to your arsehole is the main exit. By the time shit leaves the sigmoid colon and reaches the rectum, it is normally produced in discrete turds of a good consistency and reasonable size.
The rectum, anal canal and arsehole
Around the connecting tube between your sigmoid colon and rectum is a ring of muscle that angles the tube in such a way as to close it off. This sphincter muscle regulates the shit leaving the sigmoid colon; without it, your rectum would fill up continuously and you would be shitting all the time.
Your rectum is a stretchy four to five inch (10-13cm) muscular tube that can stretch to the size of a clenched fist (when full of shit) or a hand. Below your rectum is the anal canal, 1-2 inches (2-5cm) long which ends in your arse hole. The surface of the rectum and the anal canal is usually covered with a thin layer of mucus or natural lubricant designed to help with shitting and which also helps offer protection from infections. If you rub the surface, you quickly exhaust the supply of mucus which is why you need additional lubricant when putting anything up the arse.
At the bottom of the anal canal is another sphincter muscle made up of two smaller interconnected rings of muscle. One of them is not under your direct control but responds to internal body messages when the rectum is full or when you cough - the muscle tightens. When the muscle doesn't work properly you leak. You have more control over the other muscle which you can relax or tighten at will. Try it now - you see control is everything!
Shitting
The weight of shit stretching the sides of the sigmoid colon signals the top sphincter muscle to relax briefly allowing a measured amount into the rectum. This is also called a movement. If you're ready to go and sitting on a toilet, the bottom sphincter muscle relaxes and lets the shit down the anal canal and out through your arsehole.your arsehole.
hile big long cocks can have your arse poked skywards in seconds, they can knock into the rectum wall and sphincter muscles causing discomfort and pain. So the moral of this tale is quite simple: don't ignore smaller cocks and beware of bigger ones in the hands of dickheads who think they know what they're doing. Later on in the book describes how you can reduce the risk of pain and potential damage - and how to order him a taxi!
This online advice guide is an extract from the book TOGETHER, by kind permission of Patriic Gayle and Gay Times Books. The book itself is over 300 pages long and contains:
several chapters more useful advice and information
more in-depth information in some chapters
more pictures and tables
further contacts at the end of each chapter
a comprehensive listing of gay and health organisations
Described by Qx magazine as a 'Gay Bible', Together Book is a practical reference work no bookshelf should be without.
Available from Prowler Stores and all good bookshops, or click the link below for price and ordering details.