Which process matches the definition: Circular muscles behind a bolus of food contract and longitudinal muscles relax, thus pushing a bolus of food onwards?

Correct Answer: B

Rationale: Peristalsis involves coordinated muscle contractions to push food forward.

Correct Answer: C

Rationale: Filiform papillae are the most numerous type on the tongue, not less numerous than fungiform papillae, and they lack taste buds.

Correct Answer: C

Rationale: Both conditions affect the enteric nerve plexuses (e.g., Auerbach's and Meissner's), leading to motility issues like dilatation.

Correct Answer: B

Rationale: Paneth cells are found in the small intestine, not in gastric glands; the neck contains mucous neck cells, parietal cells, and stem cells.

Correct Answer: D

Rationale: Fundic glands are straight or slightly branched, not highly coiled; pyloric glands are more coiled.