What are Parathyroid Glands?
Parathyroid glands are small endocrine glands which are four in number. They are about the size of a small pea. They cling at the base of the thyroid gland two on each lobe of the thyroid gland, curving back to the trachea.
The surgeon must be careful not to damage or remove the parathyroid glands. (Photo credit: Wikipedia)
Functions of Parathyroid Gland :
The function of the parathyroid glands is to regulate the level of calcium and other elements which are required in regulated amounts in the blood stream and other tissues. The parathyroid gland secretes two hormones namely parathormone and calcitonin.
Hormone Secretions of Parathyroid Gland:
Parathormone : It is secreted when the calcium level is low in the blood.
Calcitonin : It is secreted when the calcium level is too high n the blood. Both these hormones work by controlling the interchange of calcium between the bones and the blood.
Deficiency Disorders of Parathyroid Hormones:
When there is defect in parathyroid gland, it results in a disorder named as Tetany.
Tetany : Tetany is a chronic or acute case of muscle spasms. This can be controlled by administering the synthetic parathyroid like chemicals or concentrated vitamin D preparations.
