title: Physiological aspects of absorption and secretion in intestine.
abstract: Two differently oriented approaches in intestinal physiology can be distinguished. One, mainly based on in vitro experiments, seeks explanations at the level of the epithelium itself. The other, mainly based on in vivo experiments, looks for explanations at the level of regulatory nervous and endocrine mechanisms and their interaction. These two approaches complement each other.
mesh_terms: D000818:Animals; D001693:Biological Transport, Active; D001834:Body Water / Q000378:metabolism; D003967:Diarrhea / Q000378:metabolism / Q000503:physiopathology*; D004848:Epithelium; D006859:Hydrogen / Q000378:metabolism; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000098:blood supply / Q000378:metabolism / Q000648:ultrastructure; D007421:Intestine, Small / Q000166:cytology / Q000502:physiology; D007422:Intestines / Q000294:innervation / Q000502:physiology*; D012964:Sodium / Q000378:metabolism
chemical_list: D006859:Hydrogen; D012964:Sodium