- A Thyroid
- B Adrenal
- C Pituitary
- D Pancreas
Correct answer: C. Pituitary
Explanation: The pituitary gland is the master endocrine gland. It secretes hormones that regulate other endocrine glands (TSH, FSH, LH, ACTH, GH, ADH).
Concept context
The endocrine glands, hormone classification and mechanism of action, and negative feedback regulation.