Answer: cortex.
- A cortex
- B medulla
- C gland duct
- D kidney tubule
Correct answer: A. cortex
Explanation: The adrenal cortex secretes cortisol, a long-term stress hormone.
The hypothalamus releases hormones that direct the pituitary, which releases its own trophic hormone to a target gland; that gland's hormone output then feeds back (dashed lines) to suppress both the pituitary and hypothalamus once levels are sufficient - a self-correcting loop running the entire endocrine system.
Concept context
The endocrine glands, hormone classification and mechanism of action, and negative feedback regulation.