Question

Inhalation and exhalation of oxygen in lungs
Can anyone give 1 min speech on the above topic pls
fast urgent ⬆️⬆️
I have made the above model
I need to explain it in school​

Answer 1

Answer:

When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). This process is called gas exchange and is essential to life.

Answer 2

Answer:

the air enters our body through the nostrils .

The air reaches the lungs through the trachea which acts as a passage for air to enter our lungs.Here the straw acts as the trachea

as the air enters the lungs our lungs inflates just like the balloons here

The exchange of oxygen with carbondioxide takes place in the alveoli of the lungs.

Now the lungs will be filled with CO2 which is not require by our body

So the CO2 will go back to the nostrils through the trachea as it entered our body.

Thus inhalation and exhalation of oxygen takes place

Hope it helps you for your speech!

All the best!