What is the primary function of thyroid-stimulating hormone (TSH) in the hypothalamic-pituitary-thyroid axis?

A To stimulate the production of triiodothyronine (T3) and thyroxine (T4) ✓
B To inhibit the production of T3 and T4
C To regulate the metabolism of glucose
D To control the production of adrenal hormones

Explanation

TSH stimulates the thyroid gland to produce T3 and T4, which play a crucial role in regulating metabolism, growth, and development.

Source

Guyton and Hall Textbook of Medical Physiology
Hormones and Endocrine Markers Endocrinology Thyroid Hormones Easy MEDICAL Confidence: high