The Digestive System

The purpose of the organs of the digestive system is to take in food, break it down into small particles which can be absorbed into the blood, and eliminate waste. The core of the system is the alimentary canal or gastrointestinal tract (GI tract) which is a tube extending from the oral cavity (mouth) to the anus.

The alimentary canal is composed of the oral cavity, oropharynx, esophagus, stomach, small intestine, large intestine, and rectum. Accessory organs, including the teeth, salivary glands, pancreas, liver, and gall bladder, assist in the mechanical and chemical digestion of food.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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