No, sweetie the diaphragm is a muscle that facilitates de inhelation and exhaletion of the lungs
Now they exhale, and the breathing system tour is over and...
Yes!! yay!! we are so happy!!
We will buy the house!!!
So the oxygen family found their perfect house. Well now is a home, and each day they are happy with their home and they think the respiratory system is awesome and the main funtion of the respiratory system is expan all the oxyen