Which of the following would be the effect of (1) low blood volume, (2) dehydration, and (3) ureter obstruction on the blood urea nitrogen level?
a) Low blood volume would decrease blood urea nitrogen levels, dehydration would increase blood urea nitrogen levels, and ureter obstruction would have no effect.
b) Low blood volume would increase blood urea nitrogen levels, dehydration would decrease blood urea nitrogen levels, and ureter obstruction would increase blood urea nitrogen levels.
c) Low blood volume, dehydration, and ureter obstruction would all decrease blood urea nitrogen levels.
d) Low blood volume, dehydration, and ureter obstruction would all increase blood urea nitrogen levels.