If a thyroid tumor secreted an excessive amount of calcitonin,we would expect ___________.
A) an elevated level of osteoclast activity
B) an elevated level of osteoblast activity
C) a reduced rate of endochondral ossification
D) a rise in blood calcium concentration
E) increasingly brittle bones

Question

Quizplus · Accepted Answer

Calcitonin helps to regulate calcium levels in the blood by inhibiting osteoclast activity, which breaks down bone and releases calcium into the bloodstream. With excessive calcitonin, osteoclast activity would be reduced, leading to increased osteoblast activity (cells that build up bone), thus promoting bone formation and potentially lowering blood calcium levels.

If a Thyroid Tumor Secreted an Excessive Amount of Calcitonin,we