Energy metabolism · Physiology

During prolonged fasting, the gastrointestinal contribution to energy metabolism shifts toward:

  1. A sustained rise in intestinal glucose absorption
  2. Markedly enhanced luminal digestion of dietary fat
  3. Reduced digestion, relying on hepatic metabolism
  4. A sustained rise in intestinal protein absorption
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Correct answer: Reduced digestion, relying on hepatic metabolism

Prolonged fasting reduces digestive activity. Energy homeostasis relies on hepatic glycogenolysis and gluconeogenesis.

Difficulty: Medium Question 18 of 20

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