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Human Body Systems Lesson for Kids

Instructor: Ryan Newton
Your body is a complex machine. From your brain to your heart to your stomach to your bones and muscles, all of your body systems are constantly doing very important jobs. Below you will learn about five of your body systems.

You Are a Complex Machine

You and a fancy car, like a Ferrari, have a lot in common - you're both complex machines. A Ferrari is a machine that needs a battery, an engine, brakes, and many other systems to help it go.

A system is a group of parts that work together. Your body systems contain organs and other parts that work together to keep you healthy and allow you to go to school, play with friends, and do all of the things you like to do.

There are ten different body systems, but we are going to learn about some of the most important ones, below.

Does the Nervous System Make Me Nervous?

Don't get fooled by the name. The nervous system is not there to make you nervous. It is made up of your brain, spinal chord, and all of your nerves.

Your brain is the control center of your body, like the boss. It sends signals through the spinal cord to nerves all around your body to help control things like breathing and blinking. Nerves are cables that help to move signals around to different parts of your body.

respiratory system
respiratory system

Take a Deep Breath, It's the Respiratory System

With every breath you take, your respiratory system works to give you the oxygen you need. When you breathe in, the air enters your nose and mouth, goes down a tube (trachea) in your throat and enters into your lungs. When the air is in your lungs, it gives oxygen to your blood that is spread around your body. Oxygen is the gas that powers our complex machine.

What Does the Cardiovascular System Do?

The cardiovascular system is made up of your heart and all your blood vessels, the tubes that carry blood. In this system, your heart makes sure that blood is pumped all around your body. The blood travels through blood vessels to deliver oxygen and important nutrients and to help to protect you from harmful diseases.

cardiovascular system
cardiovascular system

That's A Lot to Digest!

As you know, it's important to eat plenty of nutritious foods each day to give your body the energy it needs to work well. That's where the digestive system comes into play.

Some major parts of this system are the stomach and intestines. These parts do the job of breaking down the food you eat, getting the nutritious stuff out of that food, and then spreading that nutritious stuff into different parts of your body.

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