Which gland plays a large role in the distribution of calcium and phosphate throughout the body

ANSWER:

The "parathyroid gland" plays a large role in the "distribution of calcium and phosphate" throughout the body.

EXPLANATION:

Parathyroid glands maintain the calcium and phosphate content in a fine range so that muscular system functions properly. The Parathyroid hormone secreted by this gland increases calcium levels in the blood that promote calcium conservation by the kidneys. This hormone also regulates the phosphate concentration and thus serves as a preventer of phosphorus proximal tubular re-absorption.

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!