Directions: Select from the seven sentences below the two sentences that are true of Wakefulness and the three sentences that are true of Sleep Drag each sentence you select into the appropriate column of the table. Two of the sentences will NOT be used. This question is worth 3 points. A. The role of the rib cage increases and the role of the diaphragm decreases. B. Carbon dioxide in blood rises and oxygen drops. C. The coughing reflex is extremely complex. D. A great deal of effort is used for breathing. E. Upper airways are resistant to colds and allergies. F. There is a drop in the volume of air that is exchanged. G. Automatic and voluntary respiratory systems are both involved.