Which of the following statements regarding calcium homeostasis is true?
A) Parathyroid hormone inhibits osteoclast activity.
B) When blood calcium levels are too low, osteoclast activity increases.
C) Increased osteoblast activity increases blood calcium levels.
D) Parathyroid hormone increases calcium loss from the kidney.
E) Calcitonin elevates blood calcium levels.

Question

Quizplus · Accepted Answer

When blood calcium levels are too low, the body responds by increasing osteoclast activity. Osteoclasts break down bone, releasing calcium into the bloodstream to elevate the calcium levels back to normal.

Which of the Following Statements Regarding Calcium Homeostasis Is True