Remember that in response to low calcium, the parathyroid glands release parathyroid hormone, but since calcium just gets wasted, it keeps releasing parathyroid hormone - this is called secondary hyperparathyroidism because the primary problem is with the kidneys.

记住，对于血中低钙的情况，甲状旁腺会释放甲状旁腺激素，但由于钙损失掉了，甲状旁腺会持续释放甲状旁腺激素，这被称为继发性甲状旁腺功能亢进，因为是由肾脏受损引起的。