An important structure for blood pressure regulation is the
A) collecting duct.
B) nephron loop.
C) papillary duct.
D) proximal convoluted tubule.
E) juxtaglomerular complex.
Question 2
Which of the following vitamins is needed for the formation of clotting factors?
A) vitamin A
B) vitamin B
C) vitamin K
D) vitamin D
E) vitamin E