NURSING BS 231
PATHOPHYSIOLOGY
EXAM 3 EXAM Q&A 2026
STUDY GUIDE WITH
VERIFIED SOLUTIONS A+
GRAED
,TABLE OF CONTENTS
Section Title Page
Module 1 Cellular Biology, Injury, and Adaptation 2
Module 2 Neoplasia and Cancer Biology 26
Module 3 Inflammation and Immunity 50
Module 4 Fluid, Electrolyte, and Acid-Base Balance 74
Module 5 Cardiovascular System Disorders 95
Module 6 Respiratory System Disorders 115
Module 7 Neurological System Disorders 135
Module 8 Endocrine System Disorders 155
Module 9 Renal and Urinary System Disorders 172
Module 10 Gastrointestinal System Disorders 206
Final Exam Comprehensive Assessment (Version A) 250
Final Exam Comprehensive Assessment (Version B) 216
Answer Keys Complete Answer Key for All Modules 226
MODULE 1: CELLULAR BIOLOGY, INJURY, AND
ADAPTATION
,SECTION A: MULTIPLE CHOICE QUESTIONS
1. Which of the following best defines pathophysiology?
A) The study of normal body function
B) The study of structural changes caused by disease
C) The study of functional or physiologic changes that result from disease processes
D) The study of drug actions on the body
E) The study of microorganisms causing disease
Answer: C
Explanation: Pathophysiology is the study of functional or physiologic changes in the
body that result from disease processes. It combines aspects of pathology (structural
changes) and physiology (normal function) to understand how disease disrupts normal
body processes.
2. A 65-year-old patient with hypertension has developed thickening of the left
ventricular wall over time. This adaptation is best described as:
A) Hyperplasia
B) Metaplasia
C) Atrophy
D) Hypertrophy
E) Dysplasia
Answer: D
, Explanation: Hypertrophy is an increase in cell size, leading to an increase in organ size.
The heart muscle cells (cardiomyocytes) are permanent cells that cannot divide, so they
respond to increased workload (such as hypertension) by increasing in size. This leads to
thickening of the ventricular wall. Hyperplasia is an increase in cell number, which does
not occur in cardiac muscle.
3. True/False: Metaplastic cells are better prepared to survive under stressful
circumstances.
Answer: TRUE
Explanation: Metaplasia is a reversible change in which one differentiated cell type is
replaced by another cell type better able to withstand adverse environmental
conditions. For example, in chronic smokers, the normal ciliated columnar epithelium of
the airways undergoes metaplasia to stratified squamous epithelium, which is more
resistant to the irritants in smoke but loses protective functions like mucus clearance.
4. A patient with chronic gastroesophageal reflux disease (GERD) undergoes an
endoscopy, and biopsy results show replacement of the normal squamous
epithelium of the esophagus with columnar epithelium. This finding is
characteristic of:
A) Barrett's esophagus
B) Esophageal cancer
C) Achalasia
D) Esophageal varices
E) Hiatal hernia
PATHOPHYSIOLOGY
EXAM 3 EXAM Q&A 2026
STUDY GUIDE WITH
VERIFIED SOLUTIONS A+
GRAED
,TABLE OF CONTENTS
Section Title Page
Module 1 Cellular Biology, Injury, and Adaptation 2
Module 2 Neoplasia and Cancer Biology 26
Module 3 Inflammation and Immunity 50
Module 4 Fluid, Electrolyte, and Acid-Base Balance 74
Module 5 Cardiovascular System Disorders 95
Module 6 Respiratory System Disorders 115
Module 7 Neurological System Disorders 135
Module 8 Endocrine System Disorders 155
Module 9 Renal and Urinary System Disorders 172
Module 10 Gastrointestinal System Disorders 206
Final Exam Comprehensive Assessment (Version A) 250
Final Exam Comprehensive Assessment (Version B) 216
Answer Keys Complete Answer Key for All Modules 226
MODULE 1: CELLULAR BIOLOGY, INJURY, AND
ADAPTATION
,SECTION A: MULTIPLE CHOICE QUESTIONS
1. Which of the following best defines pathophysiology?
A) The study of normal body function
B) The study of structural changes caused by disease
C) The study of functional or physiologic changes that result from disease processes
D) The study of drug actions on the body
E) The study of microorganisms causing disease
Answer: C
Explanation: Pathophysiology is the study of functional or physiologic changes in the
body that result from disease processes. It combines aspects of pathology (structural
changes) and physiology (normal function) to understand how disease disrupts normal
body processes.
2. A 65-year-old patient with hypertension has developed thickening of the left
ventricular wall over time. This adaptation is best described as:
A) Hyperplasia
B) Metaplasia
C) Atrophy
D) Hypertrophy
E) Dysplasia
Answer: D
, Explanation: Hypertrophy is an increase in cell size, leading to an increase in organ size.
The heart muscle cells (cardiomyocytes) are permanent cells that cannot divide, so they
respond to increased workload (such as hypertension) by increasing in size. This leads to
thickening of the ventricular wall. Hyperplasia is an increase in cell number, which does
not occur in cardiac muscle.
3. True/False: Metaplastic cells are better prepared to survive under stressful
circumstances.
Answer: TRUE
Explanation: Metaplasia is a reversible change in which one differentiated cell type is
replaced by another cell type better able to withstand adverse environmental
conditions. For example, in chronic smokers, the normal ciliated columnar epithelium of
the airways undergoes metaplasia to stratified squamous epithelium, which is more
resistant to the irritants in smoke but loses protective functions like mucus clearance.
4. A patient with chronic gastroesophageal reflux disease (GERD) undergoes an
endoscopy, and biopsy results show replacement of the normal squamous
epithelium of the esophagus with columnar epithelium. This finding is
characteristic of:
A) Barrett's esophagus
B) Esophageal cancer
C) Achalasia
D) Esophageal varices
E) Hiatal hernia
