Select all that are true of calcitonin. decrease blood calcium more effective in children than adults inhibits osteoclast activity signals the kidneys to decrease the loss of calcium in the urine

The answer is;

helps decrease blood calcium

inhibits osteoclast activity

Osteoblast activity is inhibited so that calcium resorption from the bone is repressed. Calcitonin also signals the kidneys to reduce the reabsorption of calcium ions from urine hence increase its loss from the blood.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!