Which of the following control the expansion and recoil of the lungs to create air exchange during heavy breathing?
I. abdominal muscle activity
II. ribcage movement
III. diaphragm movement
IV. pectoral muscle activity
A. I and III B. II and IV C. I, II, and III D. All listed
When someone is said to have heavy breathing, he or she will take in and breathe out air rather quickly. As a matter of fact, it is faster than usual. Most times, people breathe heavily because they have endured a form of physical activity, but some people breathe heavily when they are at rest. One reason is because of allergies.
Allergies to plants or animals can cause people to breathe heavy. Smoking can also make people breathe heavily. Asthma and obesity require the movement of air to struggle to get to the lungs which in turn cause the person to breathe heavily. When a person breathes heavily, his or her lungs will expand and recoil due to abdominal muscle activity and diaphragm movement.