Anatomy Rectum

It is about 12 to 16 cm long und may be subdivided into three parts. The rectum is the most distal segment of the large intestine and has an important role as a temporary store of faeces.

Rectum And Anal Canal Structure Of The Rectum And Anal Canal

The rectum is the last part of the large intestine and connects the sigmoid colon to the anal canal.

Anatomy rectum. The rectum is an expandable organ for the temporary storage of feces. It is continuous proximally with the sigmoid colon and terminates into the anal canal. The rectum lies next to the sacrum and generally follows its curvature.

Next is the muscularis layer which contains layers of visceral smooth muscle. The peritoneum firmly attaches the rectum to the sacrum. The rectum ends about 5 centimeters below the tip of the coccyx where it becomes the anal canal.

The anus is the opening where the gastrointestinal tract ends and exits the body. When the storage site becomes full the intrarectal pressure causes the anal canal walls to dilate and expand. The expansion of the rectal walls causes the stretch receptors within the walls to stimulate the urge to defecate.

The upper third lies intraperitoneally. This results in the feces entering the canal. Deep to the mucosa is the submucosa layer that supports the other layers of the rectum.

The middle third retroperitoneally. Tough tissue called fascia surrounds the anus and attaches it to nearby structures. The anus and anal canal.

If the defecation process is delayed it may result in constipation. Finally the serosa forms the. The rectum begins at the height of s2 s3 and ends at the perineum.

In this article we will discuss the anatomy of the rectum its structure anatomical relationships and clinical relevance. The anorectal line separates the anus from the rectum. Histology the mucosa forms the innermost layer of the rectum that is in contact with fecal matter.

The anus starts at the bottom of the rectum the last portion of the colon large intestine.

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