physiological sphincter

noun
a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue
Hyponyms: ↑cardiac sphincter

Useful english dictionary. 2012.

Look at other dictionaries:

  • sphincter muscle — noun a ring of muscle that contracts to close an opening • Syn: ↑sphincter, ↑anatomical sphincter • Hypernyms: ↑muscle, ↑musculus • Hyponyms: ↑physiological sphincter, ↑ …   Useful english dictionary

  • sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… …   Medical dictionary

  • Sphincter — A sphincter is an anatomical structure, or a circular muscle, that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. Sphincters are found in many animals; there …   Wikipedia

  • sphincter — noun A ringlike band of muscle that surrounds a bodily opening, constricting and relaxing as required for normal physiological functioning. Syn: anatomical sphincter See Also: sphinx …   Wiktionary

  • anatomical sphincter — noun a ring of muscle that contracts to close an opening • Syn: ↑sphincter, ↑sphincter muscle • Hypernyms: ↑muscle, ↑musculus • Hyponyms: ↑physiological sphincter, ↑ …   Useful english dictionary

  • cardiac sphincter — noun the valve between the distal end of the esophagus and the stomach; the physiological sphincter at the esophagogastric junction • Hypernyms: ↑physiological sphincter • Part Holonyms: ↑esophagus, ↑oesophagus, ↑gorge, ↑gullet * * * noun …   Useful english dictionary

  • Maternal physiological changes in pregnancy — are the normal adaptations that a woman undergoes during pregnancy to better accommodate the embryo or fetus. They are physiological changes, that is, they are entirely normal, and include cardiovascular, hematologic, metabolic, renal and… …   Wikipedia

  • physiologic, physiological — 1. Relating to physiology. 2. Normal, as opposed to pathologic; denoting the various vital processes. 3. Denoting something that is apparent from its functional effects rather than from its anatomical structure; e.g., a p. sphincter. 4. Denoting… …   Medical dictionary

  • Ileocecal valve — Interior of the cecum and lower end of ascending colon, showing colic valve. ( Colic valve is an older term for the ileocecal valve.) …   Wikipedia

  • nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

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