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.

10. The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following best describes the role they play?        

25. The basic difference between spermatogenesis and oogenesis is that ________.        

46. Intercalated discs contain anchoring desmosomes that prevent cell separation, and gap junctions that allow ions to travel from cell to cell enabling greater communication by increasing the surface area, transmitting current across the entire heart. The fibrous cardiac skeleton acts as a tendon, an insertion and insulator, giving the cardiac cells something to pull or exert their force on and isolating atrial from ventricular contractions

43. Which body system of a pregnant woman undergoes the most dramatic physiological changes during pregnancy?