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Worksheets and No Prep Teaching Resources
Reading Comprehension Worksheets
Respiratory System
Our Respiratory System

Respiratory System
Respiratory System

Our Respiratory System
Print Our Respiratory System Reading Comprehension with Fifth Grade Work

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Print Our Respiratory System Reading Comprehension

Reading Level
     edHelper's suggested reading level:   grades 5 to 6
     Flesch-Kincaid grade level:   5.71

     challenging words:    cellular, passageway, pulmonary, inward, thereby, nitrogen, bloodstream, epiglottis, larynx, trachea, vapor, equally, respiratory, leading, colorless, beginning
     content words:    Evangelista Torricelli, Cart Scheele

Our Respiratory System
By Jennifer Kenny

1     Each day you breathe in and out whether you are awake or asleep. You don't have to think about it. It occurs every few seconds, every day, during every part of your life. You can't live without breathing. You need oxygen from the air you breathe to live and grow. Breathing takes air into the lungs and allows other air to be pushed out.
2     Well, we know breathing is important, but what is important in the air we breathe? Even ancient people knew that living things needed air to live, but they weren't sure what air really was. In 1643, Evangelista Torricelli proved that air wasn't a spirit. It had weight and took up space. In 1771, Cart Scheele discovered the very important ingredient, oxygen, in air. Scientists continue to study air, oxygen, and breathing even today.
3     Air, we know now, is actually a mixture of colorless gases. Four-fifths of air is nitrogen. One-fifth of air is oxygen. There's also some carbon dioxide, water vapor, and other gases, as well as particles of dust and pollen in air.
4     Today we also know that there are two kinds of respiration occurring in our body. One is the kind we usually think of - the breathing in and out of air through our lungs. The other kind is cellular respiration. It occurs in the cells in our body. The energy that our bodies use to keep us alive comes from the release of energy when food materials and oxygen go through chemical changes. It is from this process that energy is released from the foods that we eat. To have this occur in our cells, though, the oxygen has to get there first. So let's go back to the beginning.

Paragraphs 5 to 11:
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Respiratory System
             Respiratory System

    Bicycle Safety  
    Circulatory System  
    Digestive System  
    Excretory System  
    Food Pyramid  
    Health Professionals  
    Healthy Life  
    Medical Tools  
    Miscellaneous Health Topics  
    Muscular System  
    My Plate  
    Nervous System  
    Reproductive System  
    Respiratory System  
    Skeletal System  
    The Five Senses  
    The Human Body  

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