Answers

2015-07-07T20:09:51+08:00
We discussed this lesson two weeks ago, hehe.

The bunch of grapes represent the respiratory system wherein the main stem of the grapes represents the trachea, the smaller stems/branches represents the bronchi, the smallest stems/branches represents the bronchioles and the grapes represents the alveoli.

Hope this helps!
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2015-07-08T20:09:54+08:00
It represents the air sacs which enables gas exchange inside the lungs..and are therefore called alveoli....

hope it jelps...:)☆☆☆
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