volume definition, meaning, what is volume: the amount of space that is contained within an object or solid shape: . Learn more.
However, parathyroid hormone and calcitonin work together to control calcium levels in the blood. The blood calcium level is the main stimulus for the release of these hormones, as the release of these hormones is not controlled by the pituitary.
Parathyroid hormone and calcitonin (one of the hormones made by the thyroid gland) have key roles in regulating the amount of calcium in the blood and within the bones. The parathyroid glands share a similar blood supply, venous drainage, and lymphatic drainage to the thyroid glands.