Matary MCQ Stomach & Duodenum

All the following physiological factors are involved
in protection of the gastric wall against ulceration,
except:

A. Mucus secretion.
B. Reflux of alkaline bile from the duodenum.
C. Bicarbonate secretion
D. Gastric epithelial regeneration
E. High blood flow of the stomach

, Congenital hypertrophic pyloric stenosis:

A. Is more common in female infants.
B. Most commonly presents in the first two days of
life.
C. Is characterized by bilious vomiting.
D. Results in metabolic acidosis.
E. Is diagnosed by ultrasound examination.

,All the following inhibit the gastric mucosal barrier,
except:

A. Prostaglandin analogues.
B. H pylori.
C. Smoking.
D. Shock.
E. Duodenogastric reflux.

, All the following statements about H pylori are true,
except:

A. The prevalence of H pylori infection is inversely
related to the hygienic standards of a country.
B. The bacteria secrete urease enzyme.
C. The organism inhibits ammonia production.
D. The organism secretes proteases which destroy
mucus.
E. Eradication therapy for H pylori reduces ulcer
recurrence after its treatment.