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Subjects
Science State Board
Class 8
Organization of life
The biological levels of organization
7.
Human pulmonary or respiratory system
Exercise condition:
2
m.
Understand the picture and provide answer for the following questions
:
1.
From the above picture which gas enters into the alveolus.
Oxygen
Carbon dioxide
Carbon monoxide
Nitrogen
2.
When will the diaphragm contracts and moves down?
During sternum pushed up and outward
When air flows out of lungs
When the volume of thoracic cavity decreases
During sternum pushed down and inward
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