Question
Biology Question on Digestion and absorption
Calcium deficiency in the body occurs in the absence of
A
vitamin C
B
vitamin D
C
vitamin B
D
vitamin E.
Answer
vitamin D
Explanation
Solution
Calcium is an important constituents of bones and teeth. It is present in the blood at a concentration of about 10 mg/100 ml, being maintained at this level by hormones - calcitonin and parathyroid hormone. Ca absorption is enhanced by vitamin D. Thus, deficiency of vitamin D hampers Ca absorption resulting in conditions such as rickets, osteoporosis and osteomalacia. A deficiency of calcium in the blood may lead to tetany.