Respiratory system

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Respiratory system. All our muscles and organs need oxygen to function.

Transcript of Respiratory system

Page 1: Respiratory system

Respiratory system.

All our muscles and organs need oxygen to function.

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We breathe in Oxygen.

We breathe out carbon dioxide.

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Oxygen enters our blood when we breathe in.

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Carbon dioxide leaves our body when we breathe out.

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The respiratory system is made up of:

NostrilsWindpipe

Bronchi

Lungs

Diaphragm

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The air enters the nostrils

The nostrils have lots of little hairs to stop any object (like dust and insects).

When an object gets in, we sneeze it out.

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The air passes through the

windpipe (or trachea).

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The trachea is divided in two tubes called bronchi.

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In the lungs there are alveoli.

Oxygen passes into the blood.

Carbon dioxide passes into the air.

Alveoli are little sacks sorrounded by blood capillaries.

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When we breathe in

Our diaphragm goes down

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When we breathe out

Our diaphragm goes up

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And in a secret laboratory in mystery town…

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A very clever scientist investigates the respiratory system…

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To be continued…