is not a function of GH.

Correct Answer: C

Rationale: GH reduces glucose uptake by muscle, sparing it for other tissues.

Correct Answer: A

Rationale: Insulin secretion depends on glucose entry into β cells via GLUT2, triggering Ca2+ influx (not efflux of K^+). Metformin enhances sensitivity, not secretion, and cAMP promotes it.

Correct Answer: C

Rationale: Assuming 'TSN' is a typo for TSH (thyroid-stimulating hormone), cold temperatures stimulate its release via TRH. Dopamine and somatostatin inhibit it, stress has variable effects, and glucocorticoids suppress it.

Correct Answer: D

Rationale: Fat stores vastly exceed carbohydrate (glycogen) stores, approximately 40:1 in a typical human, reflecting fat's higher energy density.

Correct Answer: C

Rationale: Ketone bodies form during glucose deficiency (e.g., fasting), are acids, but are metabolized by extrahepatic tissues, not easily in the liver.