p. 1158. Gastrointestinal physiology
- Ian KayIan KayAssociate Head of School, School of Healthcare Science, Manchester Metropolitan University
- , and Gethin EvansGethin EvansSenior Lecturer, School of Healthcare Science, Manchester Metropolitan University
Abstract
This chapter deals with the digestive system, which is considered as one of the most important systems in the human body. The digestive system is described to be a hollow tract that runs from the mouth to the anus with other associated organs. The chapter outlines the functions of the digestive system, which is the digestion and absorption of nutrients and the defence, transport, and elimination of waste products. It also explains how ingested nutrients are broken down into their constituent parts by physical and chemical processes. The chapter refers to the stomach as the organ which acts as a reservoir allowing digestion to occur so that effective absorption can take place. It discusses the absorption of nutrients and water that takes place in the intestine, with the vast majority occurring in the small intestine.
