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Digestive System Definition

Digestive system breaks down food for nutrient absorption and waste elimination. For example, the stomach digests food.

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Multicellular Organisms

LESSON MATERIALSmove

Fun Facts

  • Food travels through mouth, stomach, intestines in the digestive system.
  • A gastroenterologist is a doctor that specializes on the digestive system.
  • After food is digested, we eliminate waste we don't need through our excretory system.

Why Do We Need To Know About Digestive System

Learning about the digestive system helps you see how complex it is and why doctors who specialize in it, called gastroenterologists, spend so much time studying it. They need to know a lot because this system is very important for our health, and understanding it well helps them do their job better.

When you understand how the digestive system works, you also learn how different parts of our body depend on each other. Problems in the digestive system can cause issues all over the body. This is important for people who want to work in healthcare, taking care of animals, or studying living things. They need to know how everything in the body is connected to find and treat problems effectively.

Frequently Asked Questions

How do the various parts of the body work together when we eat something?
When we eat something, food travels through our digestive system, which includes our mouth, stomach, intestines, and other organs. After food is digested, our bodies use it for energy and to help us stay healthy. We eliminate food we don’t need as waste through our excretory system.
How are plant and animal structures similar? How are they different?
Plants have different parts that need to work together, but they are different from animal parts. Plants get their energy and make their food using the Sun, and animals need to eat to get energy.
How is our body system organized?
Our body is made of cells, cells work together to form tissue, tissues make up organs, organs make up our body’s subsystems, and all the subsystems work together to keep our body system alive and healthy.
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