Administration of a cholinergic agent produce a mild contraction of the esophagus in achalaisa

Correct Answer: A

Rationale: Cholinergic agents stimulate acetylcholine receptors, which can cause mild esophageal contraction in achalasia due to increased smooth muscle activity, though the lower esophageal sphincter remains dysfunctional.

Correct Answer: D

Rationale: Fatty liver is associated with late pregnancy (acute fatty liver), tetracycline toxicity, obesity, diabetes (nonalcoholic fatty liver disease), and Reye's syndrome (microvesicular steatosis).

Correct Answer: D

Rationale: Thyrotoxicosis (e.g., Graves' disease) typically shows RAI uptake >50% due to increased thyroid activity.

Correct Answer: A

Rationale: Sprue (celiac disease) impairs glucose absorption, flattening the OGTT curve; the others do not typically affect it this way.

Correct Answer: D

Rationale: All listed causes "toxic, structural, infectious, and metabolic "can lead to stupor or coma.