释义 |
DictionarySeebolusalimentary bolus
bolus [bo´lus] 1. a rounded mass of food or pharmaceutical preparation ready to be swallowed, or such a mass passing through the gastrointestinal tract.2. a concentrated mass of pharmaceutical preparation, e.g., an opaque contrast medium, given intravenously or swallowed.3. a mass of scattering material, such as wax or paraffin, placed between the radiation source and the skin to achieve a precalculated isodose pattern in the tissue irradiated.alimentary bolus the mass of food, made ready by mastication, that enters the esophagus at one swallow.alimentary bolusA mass of masticated food in the esophagus that is ready to be passed into the stomach.See also: bolus |