Activity of Which of the Following Cells is Inhibited by Calcitonin

Question

Activity of which of the following cells is inhibited by calcitonin release?
A) alpha cells
B) osteoclasts
C) osteoblasts
D) C cells
E) all cells in the body

Accepted Answer

Calcitonin is released by the thyroid gland and its primary action is to inhibit the activity of osteoclasts, which are responsible for breaking down bone tissue. This leads to decreased blood calcium levels. The other choices (A, C, D, E) are not affected by calcitonin release.