47. Question: The coronary ostia are located in the:

48. Question: What is the chief predisposing factor for respiratory distress syndrome (RDS) of the newborn?

49. Question: The most common site of metastasis for a patient diagnosed with prostate cancer is which location?

50. Question: Which of the following is classified as a megaloblastic anemia?

51. Question: The glomerular filtration rate is directly related to which factor?