HORMONES, BONES , CALCIUM, VITAMIN D, TETANY

PARATHYROID HORMONE DEFINED AS ------------------

Lying just above the thyroid are a variable number of bean- shapped glands known as the parathyroid, the primary function of the parathyroids is the maintenance of adequate levels of calcium in the extra cellular fluid. The most significant function of parathyroid hormone is mobilization of Calcium from bone, it reduces phosphate concentration, permitting more calcium to be mobilized. Hypoparathyroidism leads to manifestations of Hypocalcemia and Tetany, symptoms are muscle spasms, convulsions, gradual paralysis with dyspena &death from exhaustion prior to death gastrointestinal hemorrhages & hematemesis frequently occur.
The symptoms of tetany are relieved by administration of calcium salts. Calcium salts administered intravenously. Large doses of Vitamin Dare also useful to relieve tetany and restore the normal level of calcium in the blood.

The above is quoted verbatim from the textbook
Bergersen Pharmacology In Nursing Thirteenth Edition.