What is the primary function of thyrotropin-releasing hormone (TRH) in the human body?

A Stimulate the release of insulin
B Regulate the production of thyroid-stimulating hormone (TSH) ✓
C Inhibit the secretion of growth hormone
D Activate the production of adrenaline

Explanation

TRH is a hormone produced by the hypothalamus that stimulates the release of TSH from the anterior pituitary gland, which in turn regulates the production of thyroid hormones.

Mnemonic

TRH = Thyroid Regulator Hormone

Source

Guyton and Hall Textbook of Medical Physiology
Hormones and Endocrine Markers Endocrinology Hypothalamic-Pituitary Axis Easy MEDICAL Confidence: high