Vitamin D regulates blood calcium levels by:
a) Increasing calcium loss via the kidneys
b) Decreasing mobilization of calcium from bones
c) Decreasing osteoclast activity in bones
d) Increasing calcium absorption at the intestines
a) Increasing calcium loss via the kidneys
b) Decreasing mobilization of calcium from bones
c) Decreasing osteoclast activity in bones
d) Increasing calcium absorption at the intestines