The endocrine gland(s) that sits on top of the kidneys and secretes both metabolic stabilizers and stress regulators:

Correct Answer: B

Rationale: The adrenal glands, located atop the kidneys, secrete cortisol (metabolic stabilizer) and adrenaline (stress regulator).

Correct Answer: C

Rationale: Rapid external responses (e.g., reflexes) are primarily nervous system-driven, not hormonal.

Correct Answer: D

Rationale: Lipophilic hormones (steroids, thyroid hormone) bind intracellular receptors, not second messengers.

Correct Answer: C

Rationale: Lipophilic hormones (e.g., steroids) bind intracellular receptors to activate genes.

Correct Answer: A

Rationale: It's neural tissue storing hypothalamic hormones, not synthesizing them.