We breathe out ___

Another word for "breathe in" is ___

Another word for "breathe out" is ___

The windpipe connects the ___ to the ___

Cold, dirty air is good for our respiratory system.

What helps to clean and warm the air that we inhale?

When we breathe in, our lungs and ribcage ___ to take in oxygen.

When we breathe out, our lungs and ribcage ___ to expel carbon dioxide.

Your ribs help to ___ your lungs.