Grade 6 Science: The Human Digestive System

What is the Digestive System?

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What are the main organs of the Digestive System?

How does digestion work?

Answer explanation

Digestion begins in the mouth, where food is chewed and mixed with saliva. It then travels to the stomach, where acids break it down further. Nutrients are absorbed in the intestines, and waste is excreted.

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Why is digestion important?

Answer explanation

Digestion is important because it breaks down food into nutrients, which the body needs for energy, growth, and cell repair. Without digestion, our bodies cannot absorb essential vitamins and minerals.

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What are some fun facts about digestion?

Answer explanation

Digestion starts in the mouth, where enzymes begin breaking down food. The stomach can hold about 1.5 liters of food and liquid. Interestingly, the small intestine is about 20 feet long, maximizing nutrient absorption!

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What are healthy habits for a strong digestive system?

Answer explanation

Healthy habits for a strong digestive system include eating a balanced diet rich in fiber, staying hydrated, exercising regularly, managing stress, and avoiding excessive processed foods. These practices promote gut health and efficient digestion.

What is the main function of the digestive system?

• A. To pump blood around the body

• B. To break down food into nutrients the body can use

• C. To help the body breathe

• D. To fight off diseases

Which part of the digestive system absorbs most of the nutrients from food?

• A. Stomach

• B. Esophagus

• C. Small intestine

• D. Large intestine

What happens to food in the stomach?

• A. It gets chewed into smaller pieces

• B. It is mixed with stomach juices and broken into smaller pieces

• C. Nutrients are absorbed into the blood

• D. Water is removed from the food

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Which of the following is TRUE about the large intestine?

• A. It stores waste until it leaves the body.

• B. It absorbs nutrients from food into the blood.

• C. It removes water from leftover food.

• D. It connects the mouth to the stomach.