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muscle anal The internal anal sphincter, IAS, or sphincter ani internus is a ring of smooth muscle that surrounds about .–. cm of the anal canal.. Never miss the latest 18+ videos and photos—subscribe and stay updated on all our content. Ringlike muscles called sphincters surround your anus and keep it closed until they're activated to let your poop come out. What is the. muscle anal Unlock an exclusive collection of adult content on our Telegram channel—join now and never miss a thing! 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. Press the "open" button to follow us and dive into all the exciting content we offer. The anal sphincter is made up of sets of muscles called the "internal" and "external" sphincters. These muscles form a ring around the anus. Indulge in the finest, handpicked adult content waiting to ignite your senses.
