When blood calcium levels are low
A) ostoclast activity increases.
B) calcitonin secretion increases.
C) calcium absorption is reduced.
D) bones produce more bone tissue.
E) osteoblast activity increases.

Question

Quizplus · Accepted Answer

When blood calcium levels are low, osteoclast activity increases to break down bone tissue and release calcium into the bloodstream, helping to restore normal calcium levels. Calcitonin, on the other hand, decreases blood calcium levels by inhibiting osteoclast activity, so its secretion would not increase in response to low blood calcium levels.

When Blood Calcium Levels Are Low