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Endocrine System

Thyroid and Parathyroid Glands

Are all four parathyroid glands necessary to maintain homeostasis?

No, not all of the parathyroid glands are needed to maintain homeostasis. The secretion of even a portion of one gland can maintain normal calcium concentrations. When calcium concentration levels are abnormally high, though, a condition called hyperparathyroidism results. This is typically caused by a tumor, and surgical removal of the overactive tissue will often correct the imbalance.



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