The primary function of vitamin D is to regulate absorption and ...

[berenicecastro]

The primary function of vitamin D is to regulate absorption and metabolism of:
 
  a. iron and zinc.
  b. calcium and phosphorus.
  c. sodium and chloride.
  d. potassium and magnesium.

Question 2

The active hormonal form of vitamin D is synthesized by the combined action of the:
 
  a. skin, liver, and kidney.
  b. gallbladder, liver, and pancreas.
  c. thyroid gland, small intestine, and lymph system.
  d. colonic bacteria, kidney, and adrenal gland.

[Jevvish]

Answer to Question 1

ANS: B

Answer to Question 2

ANS: A

[berenicecastro]

Excellent

[jomama]

Thanks for the timely response, appreciate it