[Role of the autonomous nervous system in the regulation of the transit, absorption and storage of nutriments].
The possible role of the autonomic nervous system (ANS) in nutrition must be reevaluated in view of recent experimental data. The ANS plays a major part in both initiating and maintaining peristalsis and in coordinating gastrointestinal motility. Intestinal absorption involves extra-epithelial mechanisms such as motility and vasomotricity of the digestive tract. In addition, the ANS (sympathetic fibres) might act directly on enterocytes, or indirectly via the intestinal plexuses through a glucose-dependent mechanism. The control of exocrine and endocrine secretions depends partly on the ANS. In particular the mucous mechanoreceptors, chemoreceptors and thermoreceptors located in the intestinal area supply the sensory information needed in that kind of regulation. The efferent fibres of the ANS intervene in the control of storage of carbohydrates in the liver and of lipids in brown adipose tissue. On the other hand, gastrointestinal afferents might be implicated in this mechanism through the hypothalamic ventro-median nucleus. Finally, these data are consistent with a modern conception suggesting that the ANS is largely involved in the regulation of visceral motility, homeostasis and alimentary behaviour.
D002001:Adipose Tissue, Brown / Q000378:metabolism; D000320:Adrenergic Fibers / Q000502:physiology; D001341:Autonomic Nervous System / Q000502:physiology*; D050260:Carbohydrate Metabolism; D002628:Chemoreceptor Cells / Q000502:physiology; D004064:Digestive System / Q000294:innervation; D005769:Gastrointestinal Motility; D005947:Glucose / Q000378:metabolism; D006706:Homeostasis; D006801:Humans; D007408:Intestinal Absorption; D007419:Intestinal Secretions / Q000502:physiology; D050356:Lipid Metabolism; D008099:Liver / Q000378:metabolism; D008465:Mechanoreceptors / Q000502:physiology; D009747:Nutritional Physiological Phenomena; D010528:Peristalsis; D013823:Thermoreceptors / Q000502:physiology; D014666:Vasomotor System / Q000502:physiology
D005947:Glucose
Rôle du système nerveux autonome dans la régulation du transit, de l'absorption et du stockage des nutriments.