edHelper.com Respiratory System The Human Body

Respiratory System

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Respiratory System
Reading Level

	edHelper's suggested reading level:	grades 7 to 8
	Flesch-Kincaid grade level:	6.87

Vocabulary

challenging words:

dome-shaped, epiglottis, ribcage, trachea, spongy, windpipe, diaphragm, communication, dioxide, carbon, vocal, respiratory, capture, travels, supply, exchange

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Respiratory System By Sharon Fabian

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¹     All of the systems in your body work together. Each system has its own job to do, but each system also depends on the others. You will see how this works as you learn about the respiratory system.
 
²     The respiratory system is the system that takes in air, separates out the oxygen that you need to live, and gets rid of the carbon dioxide that is left. It includes your nose, nasal passages, windpipe, lungs, and diaphragm. Every minute, your respiratory system breathes in about thirteen pints of air.
 
³     It starts with your nose. You inhale fresh air about twenty times every minute. The air is drawn through your nasal passages, which clean the air by filtering out particles that you wouldn't want in your lungs. Mucus takes care of this part of the job. That's why it's so sticky, to capture unwanted stuff in the air. Sometimes, when your nose feels like getting rid of this yucky stuff fast, you sneeze.

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