physiological sphincter

Noun
  1. A sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue (synset 105579132)
    is a type of: anatomical sphincter, sphincter, sphincter muscle - a ring of muscle that contracts to close an opening
    subtypes: cardiac sphincter - the valve between the distal end of the esophagus and the stomach; the physiological sphincter at the esophagogastric junction

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