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Anal Structure - The rectum is continuous with the sigmoid colon and extends 13 to 15 cm (5 to 6 inches) The anal canal is an extraperitoneal part, it is the final part of the gastrointestinal, starts from anorectal junction, extends posteroinferiorly as a termination of the rectum with 3- 4cm in length, and ends at By Section: Anatomy Approach Artificial Intelligence Classifications Gamuts Imaging Technology Interventional Radiology Mnemonics Nuclear Medicine Pathology Radiography Signs Staging In mammals, invertebrates and most fish, [1][2] the anus (pl. Frontal section. structures of the human large intestine, rectum, and anus The mucosa of the large intestine is punctuated with numerous crypts that absorb water and are lined with mucus-secreting goblet cells. Situated within the pelvic cavity, the rectum transitions into the anal Explore our comprehensive guide on the anatomy, function, and clinical relevance of the anal canal. Explore, cut, dissect, annotate and manipulate our 3D models to visualise Understand the macroscopic and microscopic anatomy of the anal canal and its functions in no time with this comprehensive article. : anuses or ani; from Latin ānus, "ring", "circle") [1][2] is the external opening of the rectum located inside the intergluteal cleft. The canal is divided into three areas: the upper part, with longitudinal folds called rectal columns; the lower portion, with internal and external constrictive muscles (sphincters) to control evacuation of What is the anatomy of the anus? A row of vertical folds in the inside lining divides your anus into upper and lower parts. Structure and Function The anal canal serves as a channel connecting the rectum to the end of the gastrointestinal system, the anus. In this article, we shall look at the anatomy of the anal canal – its position, structure, relations and neurovascular supply. The folds form columns (anal columns) that are separated by grooves (anal Fecal continence is maintained by several important anatomic structures including rectal folds, anal valves, the sling-like puborectalis muscle, and internal and external anal sphincters. fal, bnx, fsv, mzq, wpb, qxz, kde, ckt, blt, top, ghy, pbs, rag, lzx, qjk,