Chapter

The Digestive System

From Human Nutrition by Human Nutrition

Concepts

1. Digestive System

   "The process of digestion begins even before you put food into your mouth. When you feel hungry, your body sends a message to your brain that it is time to eat. Sights and smells influence your body’s

2. Mouth Stomach

   "Figure 2.5 The Human Digestive System From the Mouth to the Stomach There are four steps in the digestion process (Figure 2.5 “The Human Digestive System”). The first step is ingestion, which is the

3. Small Intestine

   "From the Stomach to the Small Intestine When food enters the stomach, a highly muscular organ, powerful peristaltic contractions help mash, pulverize, and churn food into chyme. Chyme is a semiliquid

4. Large Intestine

   "From the Small Intestine to the Large Intestine The process of digestion is fairly efficient. Any food that is still incompletely broken down (usually less than ten percent of food consumed) and the