The pylorus ( or ), or the pylorus section , connecting the hull to the duodenum. Pilorus is considered to have two parts, pyloric antrum (opening to the body of the stomach) and channel pylorus (opening to the duodenum). channel pylorus ends as a pyloric hole , which marks the intersection between the stomach and the duodenum. The hole is surrounded by a sphincter, a group of muscles, called a pyloric sphincter . The word pylorus comes from the Greek word ???????, through Latin. The Greek word pylorus means "gatekeeper", associated with "gate" (Greek: pyle ) and thus linguistically related to the word "pole ".
Video Pylorus
Structure
Pylorus is the farthest part of the stomach that connects to the duodenum. It is divided into two parts, antrum , which connects to the body of the stomach, and the pylorus channel , which connects to the duodenum.
Antrum
The pilot pilot is the beginning of the pylorus. This is near the bottom of the abdomen, proximal to the pyloric sphincter, which separates the stomach and duodenum. This may temporarily become partially or completely lethal from the rest of the abdomen during digestion by peristaltic contraction of the prepyloric sphincter; it is restricted, sometimes, from the channel of the pylorus by a little groove.
Channels
The canal (Latin: canalis pyloricus ) is the opening between the stomach and the duodenum.
Sphincter
The Histology
Under the microscope, the pylorus contains many glands, including the gastric hole, which is about half the depth of the pyloric mucosa. They consist of two or three short closed tubes opening into the common or mouth canal. These tubes are wavy, and about half of the channel length. The channel is coated by columnar cells, continuing with epithelium lining the surface of the gastric mucous membrane, the tube by shorter and more subtle granular cubic cells. The gland contains mucous cells and G cells that secrete gastrin.
Pylorus also contains scattered parietal cells and neuroendocrine cells. These endocrine cells include cell D, which releases somatostatin. (Somatostatin is responsible for killing acid secretion.) There is a second population that is sensitive to hormones near the fundus.)
Maps Pylorus
Function
Pilorus is one component of the gastrointestinal system. Food from the stomach, like chyme, passes through the pylorus to the duodenum. Pilorus, through the pyloric sphincter, regulates the entry of food from the stomach into the duodenum.
Clinical interests
In conditions such as stomach cancer, the tumor partially blocks the piping channel. A special tube can be implanted operationally to connect the stomach to the duodenum making it easy to travel from one food to another. This tube is called gastroduodenostomy.
Stenosis
Pyloric stenosis refers to a narrow pylorus. This is due to congenital hypertrophy of the pyloric sphincter. Lumen pylorus is narrower, and less food is passable. This problem is often detected in the early weeks of life. When present, newborns may vomit projectiles after eating, but although vomiting remains hungry. Pyloric stenosis can be managed by inserting a stent, or by surgical cut of the pyloric sphincter, pyloromyotomy . More
Additional images
See also
- Human gastrointestinal tract
- Stomach
- Duodenum
- Digestion
References
External links
- "Pylorus", Stedman Online Medical Dictionary at Lippincott Williams and Wilkins
- Photo anatomy: 37: 06-0105 in SUNY Downstate Medical Center - "Abdominal Cavity: Stomach"
- Photo anatomy: 38: 07-0102 at SUNY Downstate Medical Center - "Stomach, Spleen and Liver: The Pylorus"
- Anatomical image: 8150 in SUNY Downstate Medical Center
Source of the article : Wikipedia
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