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The gastrointestinal (GI) tract plays a central role in digestion, relying on the integrated action of neuromuscular mechanisms that govern motility, transport of luminal contents, secretion, absorption, and assimilation. These processes are closely coordinated with the exocrine functions of the pancreas and the biliary system, including the liver. Beyond digestion, the GI tract contributes to drug metabolism, which undergoes notable changes with aging—variations that can influence drug interactions significantly (Hall and Wiley 1999).

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Imaging of Dysfunctional Disorders of the Pharynx and the Esophagus

  • 章节

  • 发表日期：

    2026年

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  • Alfonso Reginelli,
  • Vittorio Patanè,
  • Filippo Barbiera,
  • Arnaldo Scardapane

摘要

The gastrointestinal (GI) tract plays a central role in digestion, relying on the integrated action of neuromuscular mechanisms that govern motility, transport of luminal contents, secretion, absorption, and assimilation. These processes are closely coordinated with the exocrine functions of the pancreas and the biliary system, including the liver. Beyond digestion, the GI tract contributes to drug metabolism, which undergoes notable changes with aging—variations that can influence drug interactions significantly (Hall and Wiley 1999).