Energy metabolism · Physiology

During fasting, the gastrointestinal tract's contribution to systemic energy balance primarily involves:

  1. A sharp, sustained increase in insulin secretion
  2. Enhanced absorption of ingested dietary nutrients
  3. Mobilizing stored energy via hepatic pathways
  4. A marked, generalized rise in intestinal motility
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Correct answer: Mobilizing stored energy via hepatic pathways

During fasting, the liver maintains blood glucose through glycogenolysis and gluconeogenesis. This supports systemic energy needs.

Difficulty: Medium Question 6 of 20

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