Digestive System Worksheet
An 8th-grade science worksheet covering the human digestive system, including organ functions, digestion processes, and related concepts.
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Digestive System Worksheet
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Read each question carefully and answer to the best of your ability. Refer to the diagram of the human digestive system if needed.
The Human Digestive System
1. Which organ is primarily responsible for absorbing nutrients into the bloodstream?
Stomach
Large Intestine
Small Intestine
Esophagus
2. What is the main function of the large intestine?
Chemical digestion of carbohydrates
Absorption of water and electrolytes
Production of bile
Storage of food
1. Mechanical digestion begins in the stomach.
True
False
2. Bile is produced by the pancreas and stored in the gallbladder.
True
False
1. The process of breaking down food into smaller molecules is called .
2. The muscular contractions that move food through the digestive tract are known as .
3. The enzyme in saliva that begins the digestion of starches is called .
1. Describe the difference between mechanical and chemical digestion.
2. Explain the role of villi in the small intestine.
Match each organ with its primary function.
1. Esophagus
a. Stores bile
2. Stomach
b. Connects mouth to stomach
3. Liver
c. Produces digestive enzymes for all macronutrients
4. Gallbladder
d. Produces bile
5. Pancreas
e. Churns food and begins protein digestion
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