The primary function of vitamin D in the body is to:
A) prevent anemia.
B) regulate calcium and phosphorus levels.
C) modulate iron levels.
D) support night vision.
Correct Answer:
Verified
Q20: _ is a visual pigment that helps
Q21: Keratomalacia most severely effects the:
A)eyes.
B)liver.
C)skin.
D)tongue.
Q22: Which statement about vitamin D toxicity is
Q23: The action of sunlight on 7-dehydrocholesterol forms:
A)cholecalciferol.
B)retinol.
C)parathyroid
Q24: Xerophthalmia occurs from:
A)high intake of preformed vitamin
Q26: Which form(s)of vitamin A has antioxidant properties?
A)Carotenoids
B)Preformed
Q27: Vitamin D acts primarily in the:
A)skin and
Q28: When vitamin A is deficient,there is a
Q29: When vitamin A is deficient,all of the
Q30: Vitamin A toxicity occurs most frequently when
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