physiological sphincter

/ˌˈfɪziəˌlɑdʒəkəl ˌsfɪŋktər/
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Definitions of physiological sphincter
  1. noun
    a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue
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    types:
    cardiac sphincter
    the valve between the distal end of the esophagus and the stomach; the physiological sphincter at the esophagogastric junction
    type of:
    anatomical sphincter, sphincter, sphincter muscle
    a ring of muscle that contracts to close an opening
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