sphincter

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sphincter
sphincter Anat. (ˈsfɪŋktə(r)) Also 7 sphyncter. [a. L. sphincter, ad. Gr. σϕιγκτήρ band, contractile muscle, f. σϕίγγειν to bind tight. So F. sphincter, It. sfintere, Sp. and Pg. esfinter.] 1. a. A contractile muscular ring by which an orifice of the body (in man or animals) is normally kept closed.... Oxford English Dictionary
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Sphincter
The sphincter of Oddi, or Glisson's sphincter, controlling secretions from the liver, pancreas and gall bladder into the duodenum. The sphincter urethrae, or urethral sphincter, controlling the exit of urine from the body. wikipedia.org
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Sphincter pupillae: Origin, insertion, innervation,action | Kenhub
Nov 3, 2023Sphincter pupillae muscle (Musculus sphincter pupillae) Iris is a part of the eyeball that serves the regulation of the amount of light that reaches the retina, as it features an opening called the pupil through which the light can pass through. The diameter of the pupil is dynamic and it is regulated by a pair of antagonistic muscles found in the iris; the sphincter pupillae and the dilator ...
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sphincter
sphincter/ˈsfɪŋktə(r); `sfɪŋktɚ/ n(fml 文) ring of muscle that surrounds an opening in the body and can contract to close it 括约肌 the anal sphincter 肛门括约肌. 牛津英汉双解词典
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Anatomy, Head and Neck: Eye Iris Sphincter Muscle
Jul 30, 2023The iris sphincter muscle, also known as the pupillary sphincter or sphincter pupillae, is a muscle located in the colored part of the eye called the iris. The sphincter muscle fibers are located near the pupillary margin and are slightly anterior to the pigmented epithelium of the iris. It encircles the pupil of the iris and functions to constrict the pupil in bright light via the pupillary ...
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Upper Esophageal Sphincter Function and Acid Reflux Pain - Verywell Health
Aug 1, 2023Upper Esophageal Sphincter Dysfunction. If the upper esophageal sphincter doesn't function properly, an acid that has flowed back into the esophagus is allowed into the throat. This can lead to painful medical conditions, such as heartburn or gastroesophageal reflux disease (GERD), the term used to describe repeated cases of heartburn.
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Stephen Sphincter
Stephen Sphincter was an early Gwar character, played by Ron Curry, who then recorded six albums on SST Records with Hotel X. His on-stage brother was Hans Sphincter, played by drummer Jim Thompson. References Gwar members wikipedia.org
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Sphincter ani
Sphincter ani can refer to: Sphincter ani externus muscle Sphincter ani internus muscle wikipedia.org
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Is it the sphincter that flexes when a human pushes a bowel movement? Of course the sphincter muscle is at the exit point. To use a toothpaste tube analogy, if I want to squeeze out some toothpaste, it does me little ...
The pressure that you apply when you push during a bowel movement derives from an increase in the pressure of the abdomino-pelvic cavity. You generate this pressure by closing the glottis (the opening to the lungs) and contracting the anteriolateral abdominal muscles (i.e., the external oblique, int...
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Sphincter of Oddi
The sphincter of Oddi (also hepatopancreatic sphincter or Glisson's sphincter), abbreviated as SO, is a muscular valve that in some animals, including Structure The sphincter of Oddi is a circular muscle band (Sphincter) that surrounds the major duodenal papilla. wikipedia.org
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Sphincter paralysis
Sphincter paralysis is paralysis of one of the body's many sphincters, preventing it from constricting normally. Case studies have shown patients may remain continent for many years despite being affected by anal sphincter paralysis. wikipedia.org
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Sphincter of Boyden
The sphincter of Boyden (also known as the choledochal sphincter) is a sphincter located in the common bile duct before it joins with the pancreatic duct Structure The sphincter of Boyden is a smooth muscle sphincter surrounding the common bile duct (ductus choledocus). wikipedia.org
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Fig 41 10 Tongue Sphincter Salivary glands Oral - SlideToDoc.com
Fig. 41 -13 Carbohydrate digestion Oral cavity, pharynx, esophagus Protein digestion Nucleic acid digestion Fat digestion Polysaccharides Disaccharides (starch, glycogen) (sucrose, lactose) Salivary amylase Smaller polysaccharides, maltose Stomach Proteins Pepsin Small polypeptides Lumen of small intestine Polysaccharides Pancreatic amylases Polypeptides Pancreatic trypsin and chymotrypsin DNA ...
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Precapillary sphincter
This is called the precapillary sphincter. If the sphincter is damaged or cannot contract, blood can flow into the capillary bed at high pressures. wikipedia.org
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Internal anal sphincter
The internal anal sphincter, IAS, (or sphincter ani internus) is a ring of smooth muscle that surrounds about 2.5–4.0 cm of the anal canal. The internal anal sphincter aids the sphincter ani externus to occlude the anal aperture and aids in the expulsion of the feces. wikipedia.org
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