Answered

what happens as you pull down the ballon at the bottom of the model?

Sagot :

Phewdiepieviz
the two small balloons inflate :)

the balloon you pull represents the diaphragm, and the two small balloons inside the bottle represents the lungs. so when the diaphragm contracts (when you pull the balloon), the lungs take air.

-cnfx
the air exits the balloon which made the balloon deflate