Question

parathyroid hormone and calcitriol
1 poin
stimulate osteoclasts to resorb bone and release calcium into the blood.
stimulate osteoblasts to deposit bone by producing calcified matrix.
stimulate osteoblasts to resorb bone and lower blood calcium levels.
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Explanation:

Parathyroid hormone and calcitriol work to increase blood - calcium levels. Osteoclasts break down bone and release calcium into the blood, which is stimulated by these hormones. Osteoblasts build bone, not break it down.

Answer:

stimulate osteoclasts to resorb bone and release calcium into the blood.