Wednesday, March 31, 2010

IHS Trivia Question 2

Which vitamin can only be obtained from sunlight and supplements?

a. E
b. K
c. A
d. D

The answer is D, D!

Vitamin D is a group of fat-soluble prohormones, the two major forms of which are vitamin D2 and vitamin D3. Calcitriol is the active form of vitamin D found in the body. Calcitriol plays an important role in the maintenance of several organ systems. However, its major role is to increase the flow of calcium into the bloodstream, by promoting absorption of calcium and phosphorus from food in the intestines, and reabsorption of calcium in the kidneys; enabling normal mineralization of bone and preventing hypocalcemic tetany. It is also necessary for bone growth and bone remodeling by osteoblasts and osteoclasts. So get some sun! (but don't forget the sunscreen...)

Stay curious,
Team ARC

No comments:

Post a Comment