'This large sheet of muscle provides most of the power that moves air in & out of the lungs'
the diaphragm
IN THE BO-D: This large sheet of muscle provides most of the power that moves air in & out of the lungs
This large sheet of muscle provides most of the power that moves air in & out of the lungs
This large sheet of muscle provides most of the power that moves air in & out of the lungs
IN THE BO-"D"
the diaphragm
IN THE BO-"D"