MENU
Anatomy
Anesthesiology
Biochemistry
Biomedical Informatics
Biophysics
Cell Biology
Clinical Cases
Dentistry
Dermatovenerology
Emergency Medicine
Family Medicine
Forensic Medicine
Gynecology and Obstetrics
Histology and Embryology
History of Medicine
Human Genetics
Hygiene
Infectious Diseases
Internal Medicine
Medical Deontology and Philosophy
Medical Psychology
Microbiology and Immunology
Neurology
Occupational Medicine
Oncology
Ophthalmology
Orthopaedics
Otorhinolaryngology
Pathology
Pathophysiology
Pediatrics
Pharmacology and Experimental Toxicology
Physical and Rehabilitation Medicine
Physiology
Psychiatry
Radiology
Social Medicine
Surgery
Toxicology
Research papers
Clinical research paper
Preclinical research paper
Sponsored articles
Archive » 2010 » 4 » | Archive » Medical field » Fields » Physiology »

Gastrointestinal Physiology, Part 2

 
Abstract:

This post is also available in: enEnglish slSlovenščina (Slovenian)

Nutrient, vitamin and mineral assimilation, along with water and electrolyte absorption, plays an important role in sustaining life. Unfortunately, all too often, a disease points out the impor­tance of these processes to the patient and his doctor. Mechanical and enzymatic degrada­tion of food to its basic constituents (digestion) begins in the oral cavity and is continued along the gastrointestinal tract, all the way down to the small intestine and within it. Here, the major­ity of nutrients, electrolytes, minerals, vitamins, and water are absorbed. Colon then typically fine-tunes the amount of water and electrolytes to be absorbed/excreted. The abovementioned digestive degradation to smaller molecular particles is common to all major nutrients and necessary to ensure their solubility in the watery milieu of lumen, intracellular space and plasma and, most importantly, to make them cross the intestinal epithelial barrier. Due to differences in chemical composition across different groups of nutrients, the mechanisms of their intraluminal breakdown and transepithelial transport differ.

Authors:
Stožer Andraž, Dolenšek Jurij, Rupnik Marjan

Keywords:
gastrointestinal physiology, digestion, absorption, secretion, nutrients, electrolytes, vitamins, minerals, water

Cite as:
Med Razgl. 2010; 49: 391–424.

Download PDF >>
© 2023 Društvo Medicinski razgledi | Na vrh strani / To top ↑