Examples of rectum in the following topics:
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- As additional fecal material enters the rectum, the rectal walls expand.
- A sufficient increase in fecal material in the rectum causes stretch receptors from the nervous system, located in the rectal walls, to trigger the contraction of rectal muscles, relaxation of the internal anal sphincter, and an initial contraction of the skeletal muscle of the external sphincter .
- If this urge is not acted upon, the material in the rectum is often returned to the colon by reverse peristalsis where more water is absorbed, thus temporarily reducing pressure and stretching within the rectum.
- The rectum now contracts and shortens in peristaltic waves, thus forcing fecal material out of the rectum and out through the anal canal.
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- From here it continues up the abdomen (ascending colon), then across the width of the abdominal cavity (transverse colon), and then it turns down (descending colon), continuing to its endpoint at the anus (sigmoid colon to rectum to anus) .
- There are three bands, starting at the base of the appendix and extending from the cecum to the rectum.
- Scheme of large intestine, with colon marked: cecum; (1) ascending colon; (2) transverse colon; (3) descending colon; (4) sigmoid colon; rectum and anus.
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- The true pelvis contains the pelvic colon, rectum, bladder, and some of the reproductive organs.
- The rectum is at the back, in the curve of the sacrum and coccyx; the bladder is in front, behind the pubic symphysis.
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- The upper digestive tract consists of the esophagus, stomach, and the small intestine, while the lower tract includes all of the large intestine, the rectum, and anus.
- The lower GI tract contains the remainder of the system: the large intestine, rectum, and anus.
- The compacted and dried-out waste passes to the rectum, and out of the body through the anus.
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- The inferior hypogastric plexus is a paired structure, with each situated on the side of the rectum in the male, and at the sides of the rectum and vagina in the female.
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- The large intestine consists of the cecum, colon, rectum, and anal canal.
- These three bands start at the base of the appendix and extend from the cecum to the rectum.
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- In males, the base of the bladder lies between the rectum and the pubic symphysis.
- It is superior to the prostate, and separated from the rectum by the rectovesical excavation.
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- Intraperitoneal organs include the stomach, the first five centimeters and the fourth part of the the duodenum, the jejunum, the ileum, the cecum, the appendix, the transverse colon, the sigmoid colon, and the upper third of the rectum.
- Retroperitoneal structures include the rest of the duodenum, the ascending colon, the descending colon, the middle third of the rectum, and the remainder of the pancreas.
- Organs located below the peritoneum in the subperitoneal space include the lower third of the rectum and the urinary bladder.
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- When symptoms do appear in a person over 40 years of age, it is important to exclude more dangerous conditions with similar symptoms such as cancer of the colon or rectum.
- The diverticula may bleed, either rapidly, causing bleeding through the rectum, or slowly, causing anemia.
- First time bleeding from the rectum, especially in individuals aged over age 40, could be due to colon cancer, colonic polyps, and inflammatory bowel disease rather than diverticulosis and requires clinical investigation.
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- Colorectal cancer, commonly known as bowel cancer, is a cancer from uncontrolled malignant cell growth in the colon, rectum, or appendix.
- Colorectal cancer, commonly known as bowel cancer, is a cancer from uncontrolled malignant cell growth in the colon, rectum, or appendix .