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The stoma is usually covered with a removable pouching system (adhesive or mechanical) that collects and contains the output for later disposal. Modern pouching systems enable most individuals to resume normal activities and lifestyles after surgery, often with no outward physical evidence of the stoma or its pouching system.
The normal thickness of the small intestinal wall is 3–5 mm, [6] and 1–5 mm in the large intestine. [7] Focal, irregular and asymmetrical gastrointestinal wall thickening suggests a malignancy. [7] Segmental or diffuse gastrointestinal wall thickening is most often due to ischemic, inflammatory or infectious disease. [7]
Patient with a colostomy complicated by a large parastomal hernia, which is when tissue protrudes adjacent to the stoma tract. CT scan of same patient, showing intestines within the hernia. Parastomal hernia (PH) is the most common late complication of stomata through the abdominal wall , occurring in 10-25% of patients, [ 10 ] even up to 50% ...
English: Opening and Closing of Stoma. As K+ levels increase in the guard cells, the water potential of the guard cells drops, and water enters the guard cells ...
Voting period is over. Please don't add any new votes. Voting period ends on 9 Aug 2016 at 19:57:36 (UTC). Original – Opening and Closing of Stoma. As K+ levels increase in the guard cells, the water potential of the guard cells drops, and water enters the guard cells.
Stoma in a tomato leaf shown via colorized scanning electron microscope image A stoma in horizontal cross section The underside of a leaf. In this species (Tradescantia zebrina) the guard cells of the stomata are green because they contain chlorophyll while the epidermal cells are chlorophyll-free and contain red pigments.
Pouching systems usually consist of a collection pouch, a barrier on the skin, and connect with the stoma itself, which is the part of the body that has been diverted to the skin. The system may be a one-piece system consisting only of a bag or, in some instances involve a device placed on the skin with a collection pouch that is attached ...
The opening thus revealed is called the stoma (meaning "mouth") and is surrounded by one or two peristomes. Each peristome is a ring of triangular "teeth" formed from the remnants of dead cells with thickened cell walls. There are usually 16 such teeth in a single peristome, separate from each other and able to both fold in to cover the stoma ...