PHYSIOLOGY OF THE SECRETORY AND MOTOR FUNCTIONS OF THE GASTROINTESTINAL TRACT

Abstract

The secretory and motor functions of the gastrointestinal tract (GIT) play a central role in the digestion, absorption of nutrients, and maintenance of homeostasis in the human body. This article provides a detailed analysis of the secretory mechanisms of the GIT, including gastric, pancreatic, and intestinal gland secretion processes, as well as motor activity patterns such as peristalsis and segmentation. The mechanisms of secretory–motor coordination are examined based on the integration of the enteric nervous system, the autonomic nervous system, and gastrointestinal hormones. Modern theoretical concepts of GIT function are presented through the analysis of contemporary scientific literature.