Question

Secretion of which hormone is not pituitary dependent

• A. Triiodothyronine
• B. Testosterone
• C. Glucocorticoids
• D. Parathyroid hormone

Answer 1

The correct option is D Parathyroid hormone

A. Triiodothyronine is secreted by thyroid gland and is pituitary dependent because pituitary secretes thyroid stimulating hormone (TSH) which controls the secretion of thyroid hormones.

B. Testosterone is secreted by adrenal cortex of adrenal gland and is pituitary dependent because pituitary secretes interstitial cell stimulating hormone (ICSH) in males which helps in secretion of testosterone.

C. Glucocorticoids is secreted by adrenal cortex of adrenal gland and is pituitary dependent because pituitary secretes an adrenocorticotrophic hormone (ACTH) which controls secretion of glucocorticoids.

D. Parathyroid hormone is secreted by parathyroid gland which maintains the level of calcium in blood and is independent of pituitary as there are no such secretion from pituitary.

So, the correct answer is 'Parathyroid hormone'.