Respuesta :
The parathyroid hormone into the blood which is responsible for the regulation of calcium into the blood.
How calcium in the body is regulated?
When the calcium in the blood is more than the requirement then the parathyroid hormone deposited the calcium into the bones.
While on the other hand, when the calcium in the blood is lower in concentration then this hormone release calcium from the bones so we can conclude that the parathyroid hormone into the blood which is responsible for the regulation of calcium into the blood,
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