All of the following increase insulin secretion EXCEPT:

Correct Answer: D

Rationale: α adrenergic stimulation inhibits insulin secretion via sympathetic activation, while β stimulation, acetylcholine, glucagon, and arginine (an amino acid) enhance it via various signaling pathways.

Correct Answer: B

Rationale: Glucose 6-phosphate is an intermediate, not a high-energy phosphate compound like ATP, creatine phosphate, ADP, or GTP.

Correct Answer: B

Rationale: The stomach secretes ~2-3 L/day, exceeding saliva (~1.5 L), bile (~0.5-1 L), pancreas (~1.5 L), and intestine (~1 L).

Correct Answer: B

Rationale: CCK stimulates enzyme-rich pancreatic juice and gallbladder contraction; secretin stimulates HCO_3-rich juice.

Correct Answer: B

Rationale: CCK stimulates enzyme-rich pancreatic secretion; secretin promotes HCO_3-rich juice.