45. Prior to the let-down reflex, the mammary glands secrete a yellowish fluid called ________ that has less lactose than milk and almost no fat.        

46. Which of the following is NOT a reason for O2 delivery?

2. The largest amount of carbon dioxide is transported in the bloodstream in the form of carbonic anhydrase.

12. Which of the following is NOT a stimulus for breathing?  

8. In the plasma, the quantity of oxygen in solution is ________.        

9.  Which of the following is the leading cause of cancer death for both men and women in North America?        

36. Which of the following arises in the bronchial epithelium? 

28. Decline in blood O2 stimulates kidneys to accelerate the production of this hormone. 

20. The symptoms of hyperventilation may be averted by breathing into a paper bag because it ________.        

1.The functions of the nasal conchae are to enhance the air turbulence in the cavity and to increase the mucosal surface area exposed to air for greater efficiency.