Question

Which of the following is the function of parathyroid gland?

• A. Increased level of serum calcium
• B. Increased level of blood sugar
• C. Decreased level of serum calcium
• D. Decreased level of blood sugar

Answer 1

The correct option is A Increased level of serum calcium

The parathyroid is comprised of 4 small glands embedded in the posterior aspect of the thyroid gland. Its main function is the production and secretion of parathyroid hormone (PTH).
It is a polypeptide hormone responsible for maintaining serum calcium homeostasis.
The levels of PTH and serum calcium are inversely proportional. At low serum calcium levels, PTH, in conjunction with vitamin D, works at many sites in the body to mobilize calcium stores and increase calcium absorption and reabsorption.