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muscle anal The external anal sphincter (or sphincter ani externus is an oval tube of skeletal muscle fibers. Distally, it is adherent to the skin surrounding the.. Discover a world of 18+ content—subscribe to our Telegram channel for instant access. Internal anal sphincter muscles: The inner ring of muscles. It works all the time to keep the stool (poo in and relaxes when opening your do not. muscle anal Enjoy premium quality adult videos and photos exclusively on our Telegram channel. Where are the anal sphincter muscles? The internal and external anal sphincter muscles are two interconnected rings of muscles at the lower end of the rectum. Click "open" to join our channel and ensure you never miss any of the exciting action! If you have weak muscles you may leak gas, liquid or solid stools. When you pass a stool, there is usually some residue of the stool left behind in the anal. The hottest adult content is eagerly awaiting your discovery—don’t let it pass you by!