Biology and Life Sciences

1




Chapter 16

Digestive System
Lecture Outline

© 2019 McGraw-Hill Education

, 2


Digestion and the Digestive System
Digestion is the breakdown of large organic
molecules into smaller molecules that can be
absorbed.
The digestive system performs the task of
digestion.
Food is taken into the digestive system, where it
is enzymatically broken down into smaller and
smaller particles for absorption.

© 2019 McGraw-Hill Education

, 3


Digestive System Functions
1. Ingestion of solids and liquids
2. Digestion of organic molecules
3. Absorption of nutrients
4. Elimination of waste




© 2019 McGraw-Hill Education

, 4


Digestive System 1




Figure 16.1
© 2019 McGraw-Hill Education