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muscle anal The internal anal sphincter (IAS is a continuation of the rectal muscle under autonomous control and is responsible for maintaining anal continence at rest.. Don’t miss out on unlocking the full range of 18+ content—join our Telegram channel now! 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. muscle anal Watch the top-rated adult content available only on our Telegram channel. The anal sphincter is made up of sets of muscles called the "internal" and "external" sphincters. These muscles form a ring around the anus. Hit the "open" button and join our channel. 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 the hottest adult content available just for you.