NR 507 | Final Exam Practice Page 1
, NR 507 FINAL EXAM
Advanced Pathophysiology
Chamberlain University
100-Question Original Practice Examination
2026/2027 Edition
1. Severe epigastric pain radiating to the back accompanies elevated lipase. What initiates most
pancreatic tissue injury in acute pancreatitis?
A) Premature intrapancreatic activation of digestive enzymes
B) Isolated bile acid deficiency
C) Increased colonic water absorption
D) Loss of gastric intrinsic factor
Correct Answer: Premature intrapancreatic activation of digestive enzymes
Rationale: Trypsin activation within the pancreas triggers proteolytic and inflammatory cascades, producing edema and
sometimes necrosis. Lipase elevation supports pancreatic injury, whereas intrinsic factor loss causes vitamin B12
deficiency. Gallstones and alcohol are common precipitants rather than the final injury mechanism.
2. Chronic reflux leads to intestinal-type metaplasia in the distal esophagus. What is the principal
long-term concern?
A) Conversion to gastric lymphoma
B) Immediate perforation in all cases
C) Increased risk of esophageal adenocarcinoma
D) Development of squamous papillomas only
Correct Answer: Increased risk of esophageal adenocarcinoma
Rationale: Barrett esophagus replaces normal squamous epithelium with intestinal-type columnar cells after sustained
acid exposure. The metaplasia can progress through dysplasia to adenocarcinoma. It increases risk rather than
guaranteeing malignancy, so histologic surveillance is considered according to risk.
3. A duodenal ulcer is linked to Helicobacter pylori. Which bacterial property promotes mucosal
persistence?
A) Exclusive growth inside erythrocytes
B) Urease production that buffers the acidic microenvironment
C) Secretion of pancreatic bicarbonate
D) Complete absence of flagella
Correct Answer: Urease production that buffers the acidic microenvironment
Rationale: H. pylori urease generates ammonia from urea, helping the organism survive near gastric mucus. Its motility
and inflammatory effects also damage defenses. The bacterium does not produce pancreatic bicarbonate; acid
suppression and eradication regimens target different aspects of disease.
NR 507 | Final Exam Practice Page 2
, 4. Following prolonged vomiting, an adult has hypochloremic metabolic alkalosis. Which renal
response can perpetuate alkalosis when volume is depleted?
A) Obligate bicarbonate wasting in urine
B) Increased chloride delivery to distal nephron
C) Complete suppression of aldosterone
D) Enhanced bicarbonate reclamation during sodium and volume conservation
Correct Answer: Enhanced bicarbonate reclamation during sodium and volume conservation
Rationale: Loss of gastric hydrochloric acid produces alkalosis and chloride depletion. Volume contraction activates
sodium retention, promoting bicarbonate reabsorption and distal hydrogen secretion. Saline-responsive alkalosis
improves when chloride and effective circulating volume are restored; simply increasing ventilation cannot correct its
origin.
5. A person with Crohn disease develops recurrent fistulas. Which histologic distribution most
supports the diagnosis?
A) Villous atrophy without intestinal inflammation
B) Inflammation restricted to rectal mucosa
C) Transmural inflammation with skip lesions
D) Continuous superficial inflammation limited to colon
Correct Answer: Transmural inflammation with skip lesions
Rationale: Crohn disease can involve the full bowel wall and discontinuous segments, which permits strictures, fistulas,
and penetrating complications. Ulcerative colitis typically begins at the rectum with continuous, predominantly mucosal
colonic disease. Neither pattern is diagnosed from one feature alone.
6. Bloody diarrhea and urgency accompany inflammation extending continuously from the rectum.
Which complication is particularly associated with severe colonic inflammation?
A) Pancreatic pseudocyst
B) Toxic megacolon
C) Esophageal varices
D) Achalasia
Correct Answer: Toxic megacolon
Rationale: Ulcerative colitis commonly causes continuous rectum-first colitis with bloody stools. Severe inflammation
can impair colonic neuromuscular function and cause dangerous dilation, systemic toxicity, and perforation risk. Toxic
megacolon may also complicate other colitides, but this pattern favors ulcerative colitis.
7. An adult with celiac disease remains iron deficient despite adequate dietary intake. What explains
the deficiency?
A) Excess erythropoietin suppresses iron transport
B) Distal colonic ulceration blocks iron uptake
NR 507 | Final Exam Practice Page 3
, NR 507 FINAL EXAM
Advanced Pathophysiology
Chamberlain University
100-Question Original Practice Examination
2026/2027 Edition
1. Severe epigastric pain radiating to the back accompanies elevated lipase. What initiates most
pancreatic tissue injury in acute pancreatitis?
A) Premature intrapancreatic activation of digestive enzymes
B) Isolated bile acid deficiency
C) Increased colonic water absorption
D) Loss of gastric intrinsic factor
Correct Answer: Premature intrapancreatic activation of digestive enzymes
Rationale: Trypsin activation within the pancreas triggers proteolytic and inflammatory cascades, producing edema and
sometimes necrosis. Lipase elevation supports pancreatic injury, whereas intrinsic factor loss causes vitamin B12
deficiency. Gallstones and alcohol are common precipitants rather than the final injury mechanism.
2. Chronic reflux leads to intestinal-type metaplasia in the distal esophagus. What is the principal
long-term concern?
A) Conversion to gastric lymphoma
B) Immediate perforation in all cases
C) Increased risk of esophageal adenocarcinoma
D) Development of squamous papillomas only
Correct Answer: Increased risk of esophageal adenocarcinoma
Rationale: Barrett esophagus replaces normal squamous epithelium with intestinal-type columnar cells after sustained
acid exposure. The metaplasia can progress through dysplasia to adenocarcinoma. It increases risk rather than
guaranteeing malignancy, so histologic surveillance is considered according to risk.
3. A duodenal ulcer is linked to Helicobacter pylori. Which bacterial property promotes mucosal
persistence?
A) Exclusive growth inside erythrocytes
B) Urease production that buffers the acidic microenvironment
C) Secretion of pancreatic bicarbonate
D) Complete absence of flagella
Correct Answer: Urease production that buffers the acidic microenvironment
Rationale: H. pylori urease generates ammonia from urea, helping the organism survive near gastric mucus. Its motility
and inflammatory effects also damage defenses. The bacterium does not produce pancreatic bicarbonate; acid
suppression and eradication regimens target different aspects of disease.
NR 507 | Final Exam Practice Page 2
, 4. Following prolonged vomiting, an adult has hypochloremic metabolic alkalosis. Which renal
response can perpetuate alkalosis when volume is depleted?
A) Obligate bicarbonate wasting in urine
B) Increased chloride delivery to distal nephron
C) Complete suppression of aldosterone
D) Enhanced bicarbonate reclamation during sodium and volume conservation
Correct Answer: Enhanced bicarbonate reclamation during sodium and volume conservation
Rationale: Loss of gastric hydrochloric acid produces alkalosis and chloride depletion. Volume contraction activates
sodium retention, promoting bicarbonate reabsorption and distal hydrogen secretion. Saline-responsive alkalosis
improves when chloride and effective circulating volume are restored; simply increasing ventilation cannot correct its
origin.
5. A person with Crohn disease develops recurrent fistulas. Which histologic distribution most
supports the diagnosis?
A) Villous atrophy without intestinal inflammation
B) Inflammation restricted to rectal mucosa
C) Transmural inflammation with skip lesions
D) Continuous superficial inflammation limited to colon
Correct Answer: Transmural inflammation with skip lesions
Rationale: Crohn disease can involve the full bowel wall and discontinuous segments, which permits strictures, fistulas,
and penetrating complications. Ulcerative colitis typically begins at the rectum with continuous, predominantly mucosal
colonic disease. Neither pattern is diagnosed from one feature alone.
6. Bloody diarrhea and urgency accompany inflammation extending continuously from the rectum.
Which complication is particularly associated with severe colonic inflammation?
A) Pancreatic pseudocyst
B) Toxic megacolon
C) Esophageal varices
D) Achalasia
Correct Answer: Toxic megacolon
Rationale: Ulcerative colitis commonly causes continuous rectum-first colitis with bloody stools. Severe inflammation
can impair colonic neuromuscular function and cause dangerous dilation, systemic toxicity, and perforation risk. Toxic
megacolon may also complicate other colitides, but this pattern favors ulcerative colitis.
7. An adult with celiac disease remains iron deficient despite adequate dietary intake. What explains
the deficiency?
A) Excess erythropoietin suppresses iron transport
B) Distal colonic ulceration blocks iron uptake
NR 507 | Final Exam Practice Page 3
