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Learn About Blood and Bone Cells for Kids

Updated on February 18, 2013

This is an introduction to life sciences and human anatomy for elementary age kids.

Introduction to Cells

Your body is made up of something called cells. Think of them as building blocks. Just like blocks have different shapes and sizes, so do cells. You can put different sized and shaped blocks together to make things like houses and trains.

You can think of the cells of you body like this. Your body's cells have different sizes and shapes. You can put them together to form different parts of your body. Cells are known as the building blocks of life. Here we'll look at bone and blood cells.

Your blood has red and white cells
Your blood has red and white cells

Blood Cells

Blood takes oxygen and other things your cells need all around your body. Your blood is made up of red blood cells and white blood cells. They float around in liquid called plasma.

Your red blood cells are a little like delivery trucks. When you breathe in, your red blood cells take oxygen all around your body. They are also a bit like trash collecting trucks. Red blood cells carry carbon dioxide to your lungs, so it can leave your body.

White blood cells are like the soldiers of your blood. They fight germs that can make you sick.

Your bones are made up of cells
Your bones are made up of cells

Bone Cells

Osteo comes from the Greek word for bone. Osteoblasts, osteoclasts and osteocytes are bone cells.

Osteoblasts build new bone. Osteoclasts break down bone. When some osteoblasts have finished building new bone, they become osteocytes.

Your bones are constantly being broken down and rebuilt. If you actually break a bone, your bone cells get busy to repair the fracture. Fracture is another word for break.

Even though bones cells can heal a broken bone, it is important to see a doctor and wear a cast. The cast holds the bones in place for the several weeks the bone cells need to heal the fracture.

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      6th grade scientist 10 months ago

      I needed this for some help on a science project and this was very helpful and I thank you for the help that you provided to my project.

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      Giraffes_love 12 months ago

      Very good!! This helped me alot!

    • JoanCA profile image
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      JoanCA 23 months ago

      FraFra and YingBang,

      I have another article focused on organelles but I try to keep these short because I aim them at lower grades.

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      FraFra and YingBang 23 months ago

      Good article about bones but it sort of lacks information on the specific cells. Thank you for your time.

    • JoanCA profile image
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      JoanCA 4 years ago

      Thanks Phoebe.

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      Phoebe Pike 4 years ago

      What a wonderfully simple guide!