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Gastrointestinal Physiology pp 973–989Cite as

Excretory Functions of the Gastrointestinal Tract. Defecation

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Abstract

The gastrointestinal (GI) represents a critical hub where certain by-products of metabolism are channeled for removal from the body. Disorders that affect the excretion of metabolic waste products from the gut can have serious consequences to health. Furthermore, the undigested products of metabolism are also removed from the distal gut. This ensures continuous and adequate functioning of the GI tract, which are all required to maintain ongoing life processes. This chapter deals with the metabolic products produced in the gut that are channeled for removal as well as the evacuation of the residual wastes of digestion and the associated health implications.

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Abbreviations

GI:

Gastrointestinal

ALAT:

Alanine transaminase

ASAT:

Aspartate aminotransferases

gammaGT:

Gamma-glutamyltransferase

ALP:

Alkaline phosphatase

GC-C:

Guanylate cyclase C

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  1. Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Nile University of Nigeria, FCT-Abuja, Nigeria

    Menizibeya Osain Welcome MD, PhD

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Welcome, M.O. (2018). Excretory Functions of the Gastrointestinal Tract. Defecation. In: Gastrointestinal Physiology. Springer, Cham. https://doi.org/10.1007/978-3-319-91056-7_13

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