Human Digestion Worksheet

Human Digestion Worksheet

Read each question carefully and answer to the best of your ability. Refer to the diagram of the human digestive system if needed.

1. Which organ is primarily responsible for absorbing nutrients into the bloodstream?

2. What is the main function of the esophagus?

3. The process of breaking down food into smaller molecules is called  .

4. The stomach uses strong acids and enzymes to break down  .

5. Waste products are stored in the   before being eliminated from the body.

Use the diagram above to answer the following questions.

6. The liver produces bile, which helps in the digestion of fats.

7. The large intestine is where most nutrient absorption occurs.

8. Describe the role of saliva in the digestion process.

9. Explain the difference between mechanical and chemical digestion.

Use the words below to complete the sentences.

10. The wave-like muscle contractions that move food through the digestive tract are called  .

11. The small intestine has tiny, finger-like projections called   that increase the surface area for nutrient absorption.

12. After food is mixed with stomach acids, it becomes a thick, liquid mixture called  .