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The pyloric sphincter, surrounding the pyloric orifice is a strong ring of smooth muscle at the end of the pyloric canal which lets food pass from the stomach to the duodenum. It acts as a valve , controlling the outflow of gastric contents into the duodenum [ 6 ] and release of chyme .
Chyme or chymus (/ k aɪ m /; from Greek χυμός khymos, "juice" [1] [2]) is the semi-fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum [3] (the beginning of the small intestine).
This extends from the pyloric valve which is located between the mid and the hindgut to the anus. [4] Here absorption of water, salts and other beneficial substances take place before excretion. [7] Like other animals, the removal of toxic metabolic waste requires water. However, for very small animals like insects, water conservation is a ...
The liver synthesises the bulk of lipoproteins. The liver is located in the upper right quadrant of the abdomen and below the diaphragm to which it is attached at one part, the bare area of the liver. This is to the right of the stomach and it overlies the gall bladder. The liver synthesises bile acids and lecithin to promote the digestion of ...
The stomach is located between the esophagus and the small intestine. The pyloric sphincter controls the passage of partially digested food ( chyme ) from the stomach into the duodenum , the first and shortest part of the small intestine, where peristalsis takes over to move this through the rest of the intestines.
Diagram of ileocaecal valve and sphincter. The sphincter pupillae, or pupillary sphincter, belonging to the iris in the eye. The orbicularis oculi muscle, a muscle around the eye. The upper oesophageal sphincters; The lower esophageal sphincter, or cardiac sphincter, at the upper portion of the stomach.
It is located posterior to the liver and the gallbladder and superior to the pancreatic head. [citation needed] The gastroduodenal artery, [3] portal vein, and common bile duct are situated posterior to the duodenal bulb. The distal part of the bulb is located retroperitoneally. It is located immediately distal to the pyloric sphincter ...
The lesser curvature of the stomach travels between the cardiac and pyloric orifices. It descends as a continuation of the right margin of the esophagus in front of the fibers of the right crus of the diaphragm , and then, turning to the right, it crosses the first lumbar vertebra and ends at the pylorus .