Hi, I'm Keilen, and I'm going to tell you about the Respiratory System. Did you know that there are 12 ribs on each side on the body?

The Respiratory System is a very interesting part of the body. The lungs take up all of the space in your chest. Also they are the largest bones in your body. The lungs are a bit squashy from the outside. On the bottom of the lungs is your trachea and there is two large tubes that branch off. At the end of the bronchia tubes is the little things called alveoli's. Alveoli's are the little sockets of air that holds that air at the end of the bronchiole. The capillaries cover the alveoli's.

Then, we did a respiratory system model called BOB in 3rd grade in Mrs. Eberle's class. We cut out paper and used it to make BOB. We used it for showing at open house. It was a lot of hard work.

Next, when you breathe your ribs open up, so you can inhale more air when you need air. Once you breathe in the air it goes down your windpipe. Then it branches off into the capillaries then into the alveoli's.

Lastly, to get more information go to www.factmonster.com. Thank you for your time.

THE END

KEILEN