21. Questions based on Higher Order Thinking Skills I

 

The diaphragm is the primary breathing organcirculatory organ. The diaphragm's movement expands the valves to prevent the backflow of bloodexpands the lungs and creates a vacuum. As a result,the air is sucked outthe air is sucked in. The lungs do not expand or contract if the diaphragm does not move, and breathing stopsbreathing continues. Then the individual will dieindividual will survive.