During active HCL secretion parietal cell shows:

Correct Answer: B

Rationale: During active HCl secretion, parietal cells' intracellular canaliculi expand with numerous microvilli, and the tubulovesicular system decreases as it fuses with the canaliculi.

Correct Answer: C

Rationale: Striated ducts are found in salivary glands, not the exocrine pancreas, which has intercalated ducts instead.

Correct Answer: D

Rationale: Pancreatic acinar cells secrete digestive enzymes like amylase and lipase, not pepsinogen, which is from gastric chief cells.

Correct Answer: A

Rationale: Bile salts emulsify fats, breaking them down into smaller droplets to facilitate digestion by lipase enzymes.

Correct Answer: A

Rationale: Human teeth are thecodont, meaning they are embedded in sockets of the jawbone.