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This structure consists of connective tissue covered by a simple squamous epithelium, called the mesothelium, which reduces frictional forces during digestive movements. The intraperitoneal regions include most of the stomach, first part of the duodenum, all of the small intestine, caecum and appendix, transverse colon, sigmoid colon and rectum ...
In human anatomy, the intestine (bowel or gut; Greek: éntera) is the segment of the gastrointestinal tract extending from the pyloric sphincter of the stomach to the anus and as in other mammals, consists of two segments: the small intestine and the large intestine.
The stomach is a distensible organ and can normally expand to hold about one litre of food. [22] This expansion is enabled by a series of gastric folds in the inner walls of the stomach. The stomach of a newborn baby will only be able to expand to retain about 30 ml.
Mucus forms a layer (or layers, in the case of the colon) that separates the bulk of the luminal contents from the intestinal epithelium. The mucus consists of a highly glycosylated hydrated gel formed by mucin molecules that are secreted by goblet cells. The mucus prevents large particles from contacting the epithelial cell layer while ...
This process works in one direction only, and its sole esophageal function is to move food from the mouth into the stomach (the MMC also functions to clear out remaining food in the stomach to the small bowel and remaining particles in the small bowel into the colon). [8] A simplified image showing peristalsis
A common symptom is a continual urge to have a bowel movement—the rectum could feel full or have constipation. Another is tenderness and mild irritation in the rectum and anal region. A serious symptom is pus and blood in the discharge , accompanied by cramps and pain during the bowel movement.
There are many different types of rectal discharge, but the most common presentation of a discharge is passage of mucus or pus wrapped around an otherwise normal bowel movement. [10] Rectal discharge has many causes, and may present with other symptoms: [10] [11] Staining of undergarments; Constant feeling of dampness around anus
Frequent urge to defecate, [12] and frequent bowel movements/toilet visits, [35] where only fecal pellets may be passed. [20] Conversely, there may reduced number of bowel movements per week. [19] [1] Abnormal stool texture, which may be anything from watery/loose (overflow diarrhea), [12] to fragmented, [23] very hard [19] or pellet-shaped. [12]