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hello guys I'm going to talk about my investigation project question why is

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the respiratory system important during an exercise hypothesis the two lungs the

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two main respiratory organs take and expel a big amount of oxygen and when

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you are doing an exercise you need more oxygen than when you are doing another

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The 11 main respiratory parts are nostril, nasal cavity, oral cavity, pharynx, larynx, trachea, right lung, left lung, right main bronchus, left main bronchus and diaphragm.

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When you inhale, your diaphragm contracts and your chest expands.

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But when you exhale, your chest contracts and your diaphragm relaxes.

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Experiment. The materials are one plastic bottle of two liters, two red balloons that are big, two orange straws, one scissor and one cellotape.

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Process of making. First, you cut the lower part of the bottle. Next, you join the two balloons with the two straws.

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After that, you introduce the two straws inside the plaque of the body.

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And finally, you have your respiratory body.

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Reason of making this experiment?

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Because the two lungs look like our lungs.

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And the process of inhalation and exhalation are the same.

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the respiratory system is the most important system for taking oxygen during an exercise.

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Curiosities, did you know that the respiratory system is joined with the circulatory system?

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They are connected by veins and arteries which carry out blood which contain red blood cells

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to our lungs or to other organs that need.

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This is my project and these are my pictures, my respiratory pictures, and this is the end

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of my presentation.

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Bye bye!

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Thank you.