Do you you think your lungs are just two big balloons? Well, you are wrong! This is what the inside of your lungs look like:

Your lungs have 300 million alveoli surrounding them, and many bronchioles connected. The diagram above shows something that could resemble a family tree. The trachea splits into two bronchi, and the bronchi split into countless bronchioles.

Here are a few reasons why having alveoli, a tracia, two bronchi and many bronchioles is better than two “balloon” lungs:

For the alveoli, they have a more surface area to volume ratio
More surface area means a better exchange of oxygen and Co2
The trachea, bronchi, and bronchioles transport oxygen to the alveoli, that then transport oxygen all over your body

So next time someone tells you otherwise, tell them the truth!

For the past few classes, we studied the best lunch that you can have. We started by guessing what it could be and then we saw the real thing. You should have 27.5% of your meal be vegetables and grains, fruit and protein should be 16.25% and 12.5% should be dairy. We realized that I have way to much dairy from chocolate milk. 80% of my diet was chocolate milk but I narrowed it down to 70% this week.