True
True
True
All of the air in the lungs gets exchanged with oxygen upon each breath. We exhale carbon dioxide and inhale oxygen.
The diaphragm squeezes the air out of your lungs
No. They breath using their lungs or with their lungs, but not "through" their lungs. They do however breath "through" their blowholes (to get the air in and out of their lungs).
The diaphragm squeezes the air out of your lungs
Can obtain more oxygen from each breath of air
Absolutly nothing. Air TRAVELS to your lungs. Nothing makes it go to your lungs.
A percentage of it does. There's a certain amount of "dead space."
you breath it in and the air goes into your lungs and helps pump the blood around
Yes, they do have lungs as they need to breath air.
Reptiles breathe air - through their lungs.