The liver facilitates the conjugation of bilirubin with glucuronic acid, resulting in the formation of bilirubin glucuronide. The primary objective of this process is to:

Correct Answer: D

Rationale: Conjugation makes bilirubin water-soluble, allowing its excretion in bile and urine, preventing accumulation.

Correct Answer: B

Rationale: Saliva contains salivary amylase (ptyalin) for starch digestion and lysozyme for antibacterial action. Pepsin is in the stomach, lipase is mainly pancreatic, and renin is unrelated to saliva.

Correct Answer: C

Rationale: The autonomic nervous system regulates involuntary digestive processes like peristalsis and secretion.

Correct Answer: B

Rationale: The pancreas produces insulin and glucagon to regulate blood sugar.

Correct Answer: C

Rationale: Peritubular capillaries surround the nephron, facilitating reabsorption and secretion.