The sugars absorbed by enterocytes are transported by the portal blood to the liver where they are converted to glycogen or remain in the blood. After a meal, the level of blood glucose rises rapidly, usually peaking at 30 to 60 minutes. The concentration of glucose can be as high as 150 mg/dL. Although enterocytes can use glucose for fuel, glu-tamine is preferred. Both galactose and glucose can be used in the glycosylation of proteins in the Golgi apparatus of the enterocytes.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.