| Book Edition | 15th Edition |
| Author(s) | Butler, Shier |
| ISBN | 9781259864568 |
| Publisher | McGraw-Hill, Inc. |
| Subject | Biology |
The body is composed of molecules that are acquired from food.
The digestive system is composed of the alimentary canal, a tubular series of connected organs, and accessory organs. Each organ contributes to either mechanical or chemical digestion, or absorption of nutrients.
The digestive system breaks down food physically and chemically, to provide the building blocks for maintenance, growth, and repair of the body.
