Calcitonin functions to

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Prepare for the CMS II Rheumatology E1 Exam with our comprehensive quiz. Study using flashcards and multiple-choice questions, each with hints and explanations. Get ready for success!

Multiple Choice

Calcitonin functions to

Explanation:
Calcitonin lowers blood calcium mainly by preventing bone from releasing calcium. It achieves this by inhibiting osteoclasts, the cells that resorb bone. By suppressing osteoclast activity, calcitonin reduces bone resorption and calcium release into the bloodstream. It does not stimulate osteoblasts or promote calcium reabsorption in the kidney; those actions would not help lower calcium. Increasing osteoclast activity would raise calcium levels, which calcitonin opposes. This is why the best description of calcitonin’s function is inhibition of osteoclastic bone resorption.

Calcitonin lowers blood calcium mainly by preventing bone from releasing calcium. It achieves this by inhibiting osteoclasts, the cells that resorb bone. By suppressing osteoclast activity, calcitonin reduces bone resorption and calcium release into the bloodstream. It does not stimulate osteoblasts or promote calcium reabsorption in the kidney; those actions would not help lower calcium. Increasing osteoclast activity would raise calcium levels, which calcitonin opposes. This is why the best description of calcitonin’s function is inhibition of osteoclastic bone resorption.

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