Alvi is a goofy, giggly kind of guy. (After all, he's an air head!)

 

Alvi the alveolus is my name, and air intake is my game.
I'm little more than a sack of air, but try to breathe without me
- if you dare.
When you want to run and jump, I open up and prime the pump.
I mix the air into your blood, so keep me clean and be my bud!

 

To learn more about me, go to the air sacs and air exchange section of this website.