Question
During inspiration, the diaphragm :
expands
shows no change
contracts and flattens
relaxes to become dome-saped
Solution
C.
contracts and flattens
Breathing or ventilation of the lungs is the process of filling the lung with atmospheric air and then emptying it. Inspiration is breathing in and expiration is breathing out. During inspiration, the diaphragm contracts putting backwords by partial flattening and increase the thoracic cavity lengthwise.
