Answer the following statements true (T) or false (F)
1. The lungs are composed of five lobes: three in the left lung and two in the right lung.
2. Surfactant is a slippery fluid that allows the lungs to rub against the chest wall with very little friction.
3. A pneumothorax can result in a collapsed lung.
4. The respiratory system needs to exist because most of our body cells are not in contact with the air.
5. The main function of the diaphragm is to increase the air pressure in the chest cavity.
1. FALSE
2. FALSE
3. TRUE
4. TRUE
5. FALSE
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