A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and is expressed in its functioning.

A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and is expressed in its functioning.

The Human Digestive Process: An Introduction

<ul><li>The Human Digestive Process: An Introduction</li><li>Fundamentals of Human Digestion</li><li>Digestive System Overview</li><li>Human Anatomy &amp; Physiology: The Digestive System</li></ul>

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The Human Digestive Process: An IntroductionFundamentals of Human DigestionDigestive System OverviewHuman Anatomy & Physiology: The Digestive System

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The Human Digestive Process: An Introduction

The Human Digestive Process: An Introduction