Together with the skin and the liver, the kidneys help synthesize _____, which is the active form of vitamin D.
A)calcitonin
B)calcitriol
C)erythropoietin
D)renin
E)angiotensin

Question

Quizplus · Accepted Answer

The active form of vitamin D is calcitriol, which is synthesized by the skin, liver, and kidneys. Among the choices given, only option B is correct. Calcitonin is a hormone produced by parathyroid gland cells that helps regulate calcium levels in the blood. Erythropoietin is a hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow. Renin and angiotensin are involved in the renin-angiotensin-aldosterone system, which regulates blood pressure and volume.

Together with the Skin and the Liver, the Kidneys Help