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NS510 Definitions
| Question | Answer |
|---|---|
| villi | finger-like projections of cells in the small intestine |
| enterocytes | the intestinal epithelial cells that line the lumenal surface of the small intestine |
| microvilli/microvillus | finger-like projections of membranes of enterocytes into the gut lumen |
| brush border | the lumenal membrane of enterocytes |
| tight junctions | structures between enterocytes that block movement of gut material into the body |
| digestion | the series of mechanical, chemical, and enzymatic processes that break food down for absorption |
| peristalsis | the coordinated (wave-like) series of muscle contractions that move food through the GI tract beginning in the esophagus |
| absorption | the process where nutrients are taken up into the body |
| metabolites | participating molecules in enzyme-catalyzed reactions |
| metabolic pathway | a series of enzyme-catalyzed reactions that lead from one key intermediate to the formation of a particular key product |
| metabolism | the total network of metabolic pathways, both catabolic and anabolic, that occur within a living organism |
Created by:
Jean-O
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