Circulatory System Diseases Lesson for Kids

Instructor: Tammie Mihet

Tammie has taught elementary school for 14 yrs. and holds an MA in Instructional Technology

Your circulatory system is amazing, and it needs your help to stay strong and healthy! In this lesson, review the main parts of the circulatory system and find out what can happen when they are not working properly.

The Circulatory System

Your circulatory system is like a busy highway system that transports the nutrients your body needs from place to place. It is very important to keep this highway system in tip-top shape, otherwise you could have some very serious problems! Before we look at some circulatory system diseases, we need to make sure we understand how your circulatory system works.

The Circulatory System
Circulatory System

How does the Circulatory System Work?

The circulatory system (sometimes called the cardiovascular system) is an organ system in your body that circulates, or moves, your blood to all the different parts of your body. In order to work properly, it needs three things: blood cells (blood), the heart, and blood vessels.

The blood cells in your circulatory system are like mini taxis. The blood cells pick up and deliver oxygen, water, and nutrients to all the cells in your body.

Your heart is a strong muscle, like an engine, that pumps your blood throughout your body. Without a healthy heart, your blood cells would have no power to get where they need to go!

Your blood vessels make up the highway system of your body. These are the roads your blood cells travel to make their deliveries. Your vessels need to be open and clear of traffic so that your blood cells can travel freely. The heart, blood cells, and blood vessels need each other!

Now that we reviewed the three main parts of the circulatory system, let's look at what can happen if one of these is not working right.

Diseases of the Circulatory System

When your heart--the engine--is not pumping like it should, it affects your entire circulatory system. This could lead to heart disease, and there are many different forms. Some of these include:

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