How Digestion Works
Learning Objective
I can describe how the digestive system breaks down food into nutrients the body can use.
Key Concepts
The four major tasks of the digestive system are ingestion, digestion, absorption, and elimination.
Saliva contains enzymes that start chemical digestion in the mouth, while teeth perform mechanical digestion.
The liver produces bile to help break down lipids, the gallbladder stores the bile, and the pancreas produces juices with digestive enzymes.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. What are the four major tasks accomplished by the human digestive system, as discussed in the video?
2. Explain the difference between mechanical and chemical digestion, and give an example of where each occurs in the digestive system.
3. What is the role of saliva in digestion, and why is 'dry mouth' potentially harmful?
...and 9 more questions
Educational Video
Digestive System
Amoeba Sisters