The secretion of parathyroid hormone is controlled primarily by the
A)hypothalamus.
B)concentration of blood calcium.
C)thyroid gland.
D)pituitary glanD.

Question

Quizplus · Accepted Answer

The secretion of parathyroid hormone is mainly controlled by the concentration of blood calcium levels. When blood calcium levels are low, the parathyroid glands secrete PTH to increase the levels by stimulating bone resorption and calcium reabsorption by the kidneys. Conversely, when blood calcium levels are high, PTH secretion is inhibited. The hypothalamus and pituitary gland do not directly regulate PTH secretion, and the thyroid gland is primarily responsible for producing and releasing thyroid hormones.

The Secretion of Parathyroid Hormone Is Controlled Primarily by the