5 Questions
What causes expansion of the lungs during inspiration?
Contraction of the diaphragm
What causes compression of the lungs during expiration?
Relaxation of the diaphragm
What primarily achieves the extra force for rapid expiration?
Contraction of the abdominal muscles
What is accomplished with the diaphragm during normal quiet breathing?
Contraction
What causes the ribs to project almost directly forward and the sternum to move forward and away from the spine?
Elevation of the rib cage
Test your knowledge of respiratory physiology with this quiz on lung volume and thoracic cavity dynamics. Explore how changes in thoracic volume affect lung volume and understand the role of the diaphragm in breathing.
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