Choose the correct option from the brackets and complete:
(ii) The hormone which controls the calcium content in the blood
[Calcitonin, insulin, glucagon]
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Solution
Answer: Calcitonin.
Calcitonin is the hormone secreted by the thyroid gland which decreases the calcium and phosphorus levels in the blood by depositing them in bones.
Lack of calcitonin in the body causes osteoporosis (weakening of bones).