How Digestion Works
11th Grade · Science · 45 min
Lesson Preview
Learning Objective
I can describe how the digestive system breaks down food and absorbs nutrients.
- 1
The four major tasks of the digestive system are ingestion, digestion, absorption, and elimination.
- 2
Saliva contains enzymes like salivary amylase to start chemical digestion in the mouth, while teeth perform mechanical digestion.
- 3
The liver produces bile to help break down lipids, the gallbladder stores the bile, and the pancreas produces pancreatic juices with digestive enzymes.
