Human pulmonary or respiratory system — task. Science State Board, Class 8.

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Choose the best option from the picture:

1.

800px-Alveoli.svg.png

The gas exchange occurs in _____.

Alveoli
Lung
Bronchi
Bronchiole

2.

BeFunky-collage (4).png

What is happening during the volume of thoracic cavity decreases and pressure increases,

Oxygen runs into the lungs
Oxygen moves out of the lungs
Carbon dioxide rushes out of the lungs
Carbon dioxide rushes into the lungs

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