Answer to Question 1
A, C, D, E
Normal flora inhabit and protect the skin, lower GI tract, nose and throat, and eyes. The bladder does not have any natural flora for protection.
Answer to Question 2
B, C, D, E
Age-related changes that can lead to PVD include: loss of elasticity in vessel walls, atheroscle-rotic changes in vessels, sedentary practices, and weakened leg muscles.
Blood viscosity increases with age.