Calcitriol is

• 1,25-(OH)2D

• 7-dehydrocholesterol

• 25-(OH)2D

• None of the choices

Which of the following is not a source of Vit D

• Salmon

• Egg Yolks

• Milk

• Spinach

The RDA for Vitamin D is:

• 400 IU

• 600 IU

• 800 IU

• 1000 IU

Ergocalciferol

• Is of plant origin

• Is of animal origin

Obesity increases Vit D levels

• True

• False

Higher latitude associated with higher vitamin D levels

• True

• False

The renal enzyme responsible for the final 1-hydroxylation step of vitamin D activation is

Vitamin D is stored in

• Liver

• Kidney

• Adipocytes

• Skin

Given enough exposure of skin to sunlight, the body can synthesize the vitamin D it needs by making it out of _____.

Which of the following are effects of the action of calcitriol within the body? (Check all that apply.)

• facilitate intestinal absorption of calcium

• directs kidneys to reabsorb calcium

• produce melanin to darken the skin

• reduce hematopoesis

Tags

NGSS.HS-LS1-3