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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.. Watch all 18+ videos and photos by following our Telegram 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. muscle anal Enjoy premium quality adult videos and photos exclusively on our Telegram channel. Just tap "open" and subscribe to our channel to stay updated with the latest news and features. Step into the world of sensuality with the steamiest adult content, prepared just for your pleasure.Indulge in the finest, handpicked adult content waiting to ignite your senses. The anal sphincter is a pair of muscles at the end of the rectum that controls the release of stool. When these muscles become damaged, you may.