THE RESPIRATORY SYSTEM

How does it work?Which organs do they have?Which is its function?

BrainstormingDo you remember the difference between the blood carried by arteries and veins?

Which element do we breathe?

Why do we breathe?

Do you think breathing is a voluntary or involuntary activity?

Which organs do the respiratory system have?

Oxigen passes from the alveoli to the capillaries and into the blood

Carbon dioxide leaves the blood and enters the alveoli

Alveoli

INHALATION AND EXHALATION

Our diaphragm contracts and allow the lungs to inflate.

The diaphragm relaxes and moves up, pushing the CO2 out of the lungs

ACTIVITY 1 PAGE 29 AND RESPIRATORY SYSTEM

Make complete sentences

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Ask for any doubt

TRUE OR FALSE

• When we breath, we obtain carbon dioxide (CO2)

• Trachea divides in two tubes called bronchi .

• Gas exhange takes place in the bronchioles.• When we take a breath, our diaphragm relaxes and moves up.

FALSE

TRUE

FALSE

FALSE

• Respiratory system game

• Inhalation and exhalation game

• How our lungs work video