1. At the concentration above the normal range, which of thefollowing hormones dissolves bones and make the bones more fragile?
a) calcitonin
b) parathormone
c) growth hormone
d) none of the above
please explain
2. Blood calcium level increases in response to
a) 1,25-dihydroxyvitamine D
b) calcitonin
c) both a and b
d) neither a nor b
please explain!