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Digestive System

Published on Nov 19, 2015

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PRESENTATION OUTLINE

DIGESTIVE SYSTEM

TRACKING FOOD THROUGH THE DIGESTIVE SYSTEM

1) INGESTION

THIS IS WHEN FOOD ENTERS THE MOUTH

2) Digestion,
Process that breaks food down into small molecules

A. Mechanical digestion
When food is chewed and churned

B. Chemical digestion
Breaks down larger food molecules into smaller ones

3) ABSORPTION
Small molecules of food are taken into the body cells

4) Elimination
When wastes made of unabsorbed food molecules
pass out of the body