BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Parathyroid glands produce parathyroid hormone, which plays a key role in the regulation of calcium levels in the blood.

Detailed explanation-2: -Parathyroid hormone comes from four parathyroid glands in the neck, just behind the thyroid. These glands receive feedback from blood calcium levels to determine when they need to secrete the hormone.

Detailed explanation-3: -Parathyroid Gland Four small masses of epithelial tissue are embedded in the connective tissue capsule on the posterior surface of the thyroid glands. These are parathyroid glands, and they secrete parathyroid hormone or parathormone. Parathyroid hormone is the most important regulator of blood calcium levels.