,HSC 203 Final Exam Pathophysiology Questions And Answers
2026/2027 Jersey College
Q1. Which pathophysiologic mechanism is most strongly associated
with gastroesophageal reflux disease?
A) Excessive pancreatic enzyme secretion
B) Incompetence or inappropriate relaxation of the lower esophageal
sphincter allows gastric contents to reflux into the esophagus
C) Complete obstruction of the pylorus
D) Autoimmune destruction of intestinal villi
Correct Answer: B) Incompetence or inappropriate relaxation of the lower
esophageal sphincter allows gastric contents to reflux into the esophagus
Rationale: Failure of the lower esophageal sphincter to maintain an
effective barrier exposes esophageal mucosa to acidic gastric contents and
promotes inflammation.
Q2. Why can chronic gastroesophageal reflux produce esophagitis?
A) Repeated exposure of esophageal mucosa to gastric acid and digestive
contents causes tissue injury
B) Gastric acid permanently strengthens esophageal epithelium
C) Reflux decreases mucosal inflammation
D) Bile secretion stops completely
Correct Answer: A) Repeated exposure of esophageal mucosa to gastric acid
and digestive contents causes tissue injury
Rationale: The esophagus lacks the same protective mechanisms as the
stomach and can become inflamed after repeated acid exposure.
Q3. Infection with Helicobacter pylori contributes to peptic ulcer
disease primarily by:
A) Increasing pancreatic insulin secretion
B) Causing complete intestinal obstruction
C) Disrupting gastric or duodenal mucosal defenses and promoting chronic
inflammation
D) Eliminating gastric acid production
Correct Answer: C) Disrupting gastric or duodenal mucosal defenses and
promoting chronic inflammation
,Rationale: H. pylori causes chronic mucosal inflammation and weakens
protective mechanisms, increasing susceptibility to acid-related ulceration.
Q4. Long-term use of nonsteroidal anti-inflammatory drugs can
promote gastric ulcer formation through which mechanism?
A) Increased prostaglandin synthesis
B) Increased mucus and bicarbonate secretion
C) Complete inhibition of gastric acid
D) Reduced prostaglandin production weakens gastric mucosal protection
Correct Answer: D) Reduced prostaglandin production weakens gastric
mucosal protection
Rationale: Prostaglandins support mucus, bicarbonate secretion, blood flow,
and mucosal repair. Their inhibition increases vulnerability to gastric injury.
Q5. A patient with a bleeding peptic ulcer develops tachycardia,
hypotension, and cool skin. Which process is occurring?
A) Acute blood loss is reducing circulating volume and tissue perfusion
B) Plasma volume is increasing
C) Systemic vascular resistance is permanently absent
D) Red blood cell production has become excessive
Correct Answer: A) Acute blood loss is reducing circulating volume and tissue
perfusion
Rationale: Significant gastrointestinal hemorrhage decreases effective
circulating volume and can progress to hypovolemic shock.
Q6. Which pathophysiologic feature most clearly distinguishes
Crohn disease from ulcerative colitis?
A) Crohn disease affects only the rectum
B) Crohn disease can cause transmural inflammation with skip lesions
anywhere along the gastrointestinal tract
C) Ulcerative colitis produces transmural lesions throughout the small
intestine
D) Crohn disease never causes fistulas
Correct Answer: B) Crohn disease can cause transmural inflammation with
skip lesions anywhere along the gastrointestinal tract
Rationale: Crohn disease can affect discontinuous segments throughout the
gastrointestinal tract and involves the full thickness of the bowel wall.
, Q7. Why can Crohn disease lead to fistula formation?
A) Superficial mucosal irritation heals too rapidly
B) Excess gastric acid enters the colon
C) Transmural inflammation can penetrate the bowel wall and create
abnormal connections with adjacent structures
D) Decreased intestinal motility seals neighboring organs together
Correct Answer: C) Transmural inflammation can penetrate the bowel wall
and create abnormal connections with adjacent structures
Rationale: Deep inflammatory ulcers can extend through the entire bowel
wall and form communicating tracts between organs or the skin.
Q8. Which pattern is most characteristic of ulcerative colitis?
A) Continuous mucosal inflammation beginning in the rectum and extending
proximally through the colon
B) Patchy transmural inflammation from mouth to anus
C) Disease limited exclusively to the stomach
D) Absence of intestinal bleeding
Correct Answer: A) Continuous mucosal inflammation beginning in the
rectum and extending proximally through the colon
Rationale: Ulcerative colitis typically involves continuous superficial
inflammation of the colon beginning at the rectum.
Q9. Which mechanism causes malabsorption in celiac disease?
A) Autoimmune-mediated injury to the small-intestinal mucosa causes villous
atrophy
B) Excess bile destroys the pancreatic ducts
C) Intestinal villi become excessively enlarged
D) Gastric acid production ceases
Correct Answer: A) Autoimmune-mediated injury to the small-intestinal
mucosa causes villous atrophy
Rationale: Gluten-triggered immune injury damages intestinal villi, reducing
absorptive surface area and impairing nutrient absorption.
Q10. Why can chronic malabsorption cause weight loss and
nutritional deficiencies?
2026/2027 Jersey College
Q1. Which pathophysiologic mechanism is most strongly associated
with gastroesophageal reflux disease?
A) Excessive pancreatic enzyme secretion
B) Incompetence or inappropriate relaxation of the lower esophageal
sphincter allows gastric contents to reflux into the esophagus
C) Complete obstruction of the pylorus
D) Autoimmune destruction of intestinal villi
Correct Answer: B) Incompetence or inappropriate relaxation of the lower
esophageal sphincter allows gastric contents to reflux into the esophagus
Rationale: Failure of the lower esophageal sphincter to maintain an
effective barrier exposes esophageal mucosa to acidic gastric contents and
promotes inflammation.
Q2. Why can chronic gastroesophageal reflux produce esophagitis?
A) Repeated exposure of esophageal mucosa to gastric acid and digestive
contents causes tissue injury
B) Gastric acid permanently strengthens esophageal epithelium
C) Reflux decreases mucosal inflammation
D) Bile secretion stops completely
Correct Answer: A) Repeated exposure of esophageal mucosa to gastric acid
and digestive contents causes tissue injury
Rationale: The esophagus lacks the same protective mechanisms as the
stomach and can become inflamed after repeated acid exposure.
Q3. Infection with Helicobacter pylori contributes to peptic ulcer
disease primarily by:
A) Increasing pancreatic insulin secretion
B) Causing complete intestinal obstruction
C) Disrupting gastric or duodenal mucosal defenses and promoting chronic
inflammation
D) Eliminating gastric acid production
Correct Answer: C) Disrupting gastric or duodenal mucosal defenses and
promoting chronic inflammation
,Rationale: H. pylori causes chronic mucosal inflammation and weakens
protective mechanisms, increasing susceptibility to acid-related ulceration.
Q4. Long-term use of nonsteroidal anti-inflammatory drugs can
promote gastric ulcer formation through which mechanism?
A) Increased prostaglandin synthesis
B) Increased mucus and bicarbonate secretion
C) Complete inhibition of gastric acid
D) Reduced prostaglandin production weakens gastric mucosal protection
Correct Answer: D) Reduced prostaglandin production weakens gastric
mucosal protection
Rationale: Prostaglandins support mucus, bicarbonate secretion, blood flow,
and mucosal repair. Their inhibition increases vulnerability to gastric injury.
Q5. A patient with a bleeding peptic ulcer develops tachycardia,
hypotension, and cool skin. Which process is occurring?
A) Acute blood loss is reducing circulating volume and tissue perfusion
B) Plasma volume is increasing
C) Systemic vascular resistance is permanently absent
D) Red blood cell production has become excessive
Correct Answer: A) Acute blood loss is reducing circulating volume and tissue
perfusion
Rationale: Significant gastrointestinal hemorrhage decreases effective
circulating volume and can progress to hypovolemic shock.
Q6. Which pathophysiologic feature most clearly distinguishes
Crohn disease from ulcerative colitis?
A) Crohn disease affects only the rectum
B) Crohn disease can cause transmural inflammation with skip lesions
anywhere along the gastrointestinal tract
C) Ulcerative colitis produces transmural lesions throughout the small
intestine
D) Crohn disease never causes fistulas
Correct Answer: B) Crohn disease can cause transmural inflammation with
skip lesions anywhere along the gastrointestinal tract
Rationale: Crohn disease can affect discontinuous segments throughout the
gastrointestinal tract and involves the full thickness of the bowel wall.
, Q7. Why can Crohn disease lead to fistula formation?
A) Superficial mucosal irritation heals too rapidly
B) Excess gastric acid enters the colon
C) Transmural inflammation can penetrate the bowel wall and create
abnormal connections with adjacent structures
D) Decreased intestinal motility seals neighboring organs together
Correct Answer: C) Transmural inflammation can penetrate the bowel wall
and create abnormal connections with adjacent structures
Rationale: Deep inflammatory ulcers can extend through the entire bowel
wall and form communicating tracts between organs or the skin.
Q8. Which pattern is most characteristic of ulcerative colitis?
A) Continuous mucosal inflammation beginning in the rectum and extending
proximally through the colon
B) Patchy transmural inflammation from mouth to anus
C) Disease limited exclusively to the stomach
D) Absence of intestinal bleeding
Correct Answer: A) Continuous mucosal inflammation beginning in the
rectum and extending proximally through the colon
Rationale: Ulcerative colitis typically involves continuous superficial
inflammation of the colon beginning at the rectum.
Q9. Which mechanism causes malabsorption in celiac disease?
A) Autoimmune-mediated injury to the small-intestinal mucosa causes villous
atrophy
B) Excess bile destroys the pancreatic ducts
C) Intestinal villi become excessively enlarged
D) Gastric acid production ceases
Correct Answer: A) Autoimmune-mediated injury to the small-intestinal
mucosa causes villous atrophy
Rationale: Gluten-triggered immune injury damages intestinal villi, reducing
absorptive surface area and impairing nutrient absorption.
Q10. Why can chronic malabsorption cause weight loss and
nutritional deficiencies?
