WorksheetsGastrointestinal System Quiz
Total questions: 10
Worksheet time: 5mins
A newborn has projectile bilious vomiting shortly after each feeding. A review of his mother's records shows the presence of polyhydramnios during the pregnancy, but a karyotypic analysis was normal. Which of the following is the most likely cause of these findings in the newborn?
Hirschsprung disease
Ileal diverticulum
Malrotation of the ventral pancreatic bud
Pyloric stenosis
Tracheoesophageal fistula
A 45-year-old man comes to the physician because of recurrent nausea and abdominal distress. His pulse is 80/min, respirations are 18/min, and blood pressure is 134/88 mm Hg. Physical examination shows conjunctival and oral mucosal pallor, and a nontender abdomen. A gastric biopsy specimen shows atrophy of the mucosa in the fundus and body, with marked lymphocytic infiltration. Laboratory studies show: Leukocyte count 12,000/mm3 Segmented neutrophils 58% Lymphocytes 36% Monocytes 4% Eosinophils 2% Erythrocyte count 2.8 million/mm3 Hemoglobin 10 g/dL Hematocrit 30% MCV 115 μm3 Stool guaiac test Negative. Which of the following is the most likely cause of this patient's anemia?
Antibodies against intrinsic factor
Chronic alcohol use
Crohn disease
Fish tapeworm infestation
Helicobacter pylori infection
Salivary secretion
initiates protein digestion.
is mainly under hormonal control.
is decreased by muscarinic receptor blockers like atropine.
is increased by stress.
lowers oral pH
Gastric acid secretion is not decreased by
Acetylcholine
Low gastric pH
Prostaglandin E2
secretin
somatostatin
This statement regarding the actions of gastrointestinal hormones is FALSE:
Cholecystokinin causes contraction of gall bladder
Secretin causes pancreatic secretion rich in bicarbonate
Somatostatin increases gastric motility
Vasoactive intestinal peptide causes relaxation of intestinal smooth muscle
Gastrin stimulates the growth of gastric mucosa
This is the main function of myenteric plexus in enteric nervous system.
Activation of peristalsis in the small intestine.
Regulation of endocrine secretions of the gut.
Regulation of GI motility.
Stimulation of the circular muscle layer of the oesophagus.
Stimulation of the longitudinal muscle layer of the stomach.
This is the main function of submucous plexus in enteric nervous system.
Regulation of blood flow to the intestine
Regulation of sensory function in the gastrointestinal tract.
Stimulation of the chemoreceptors.
Stimulation of the mechanoreceptors.
Stimulation of endocrine secretions in small intestine.
Which of the following is TRUE?
Parotid gland provides most of the saliva produced daily.
pH of saliva at rest is 7.0
Lingual lipase is produced by submandibular gland
Reflex salivary secretion upon eating is mediated by vagus nerve
Peristalsis is a gravity dependent process.
Which of the following statement is FALSE?
Carbonic anhydrase is found only in gastric parietal cells
H+ is secreted into stomach by active H+K+ antiport in the gastric parietal cells
Cl- is actively transported into the stomach by gastric parietal cells
Gastric venous blood is acidic after a meal.
All of the above
Gastrin:
is only secreted only by gastric antral G cells
is inactivated only in the liver
stimulates insulin secretion after protein meal
secretion redces with gastric distention
is the most potent pancreatic secretagogue
