WGU D236 Pathophysiology Exam Questions
and Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which statement best describes the primary focus of
pathophysiology?
A. The study of normal body structures
B. The study of drug interactions and medication effects
C. The study of functional changes associated with disease or injury
D. The study of microorganisms that cause infections
Rationale: Pathophysiology focuses on how diseases, disorders, or
injuries alter normal physiological processes. It connects changes at
the cellular, tissue, organ, and systemic levels with clinical
manifestations.
2. A patient develops swelling and redness after a minor injury.
Which process is responsible for these immediate inflammatory
responses?
,A. Cellular apoptosis
B. Release of inflammatory mediators such as histamine and cytokines
C. Reduced blood flow to the injured area
D. Decreased immune system activity
Rationale: Inflammation occurs when damaged cells and immune cells
release mediators such as histamine, prostaglandins, and cytokines.
These substances increase blood flow and vascular permeability,
producing redness, warmth, and swelling.
3. Which cellular adaptation occurs when cells increase in size due to
increased workload?
A. Hyperplasia
B. Metaplasia
C. Atrophy
D. Hypertrophy
Rationale: Hypertrophy is an increase in individual cell size caused by
increased functional demand. For example, cardiac muscle cells
enlarge in response to chronic hypertension.
, 4. A decrease in cell size caused by reduced workload or lack of
stimulation is known as:
A. Dysplasia
B. Atrophy
C. Hyperplasia
D. Hypertrophy
Rationale: Atrophy occurs when cells shrink due to decreased use,
reduced blood supply, loss of hormonal stimulation, or inadequate
nutrition.
5. Which type of cellular adaptation involves an increase in the
number of cells?
A. Hypertrophy
B. Metaplasia
C. Hyperplasia
D. Necrosis
Rationale: Hyperplasia is an increase in cell number caused by
increased cell division. It may occur as a normal response, such as
breast tissue growth during pregnancy, or as a pathological process.
, 6. A patient with chronic acid reflux develops replacement of normal
esophageal cells with a different cell type. This process is called:
A. Dysplasia
B. Hypertrophy
C. Metaplasia
D. Apoptosis
Rationale: Metaplasia is a reversible adaptation in which one mature
cell type changes into another better suited to tolerate stress. Chronic
irritation can trigger this process.
7. Which process describes programmed cell death?
A. Necrosis
B. Inflammation
C. Apoptosis
D. Cellular swelling
Rationale: Apoptosis is controlled, programmed cell death that
removes damaged or unnecessary cells without causing significant
inflammation.
8. Necrosis differs from apoptosis because necrosis:
and Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which statement best describes the primary focus of
pathophysiology?
A. The study of normal body structures
B. The study of drug interactions and medication effects
C. The study of functional changes associated with disease or injury
D. The study of microorganisms that cause infections
Rationale: Pathophysiology focuses on how diseases, disorders, or
injuries alter normal physiological processes. It connects changes at
the cellular, tissue, organ, and systemic levels with clinical
manifestations.
2. A patient develops swelling and redness after a minor injury.
Which process is responsible for these immediate inflammatory
responses?
,A. Cellular apoptosis
B. Release of inflammatory mediators such as histamine and cytokines
C. Reduced blood flow to the injured area
D. Decreased immune system activity
Rationale: Inflammation occurs when damaged cells and immune cells
release mediators such as histamine, prostaglandins, and cytokines.
These substances increase blood flow and vascular permeability,
producing redness, warmth, and swelling.
3. Which cellular adaptation occurs when cells increase in size due to
increased workload?
A. Hyperplasia
B. Metaplasia
C. Atrophy
D. Hypertrophy
Rationale: Hypertrophy is an increase in individual cell size caused by
increased functional demand. For example, cardiac muscle cells
enlarge in response to chronic hypertension.
, 4. A decrease in cell size caused by reduced workload or lack of
stimulation is known as:
A. Dysplasia
B. Atrophy
C. Hyperplasia
D. Hypertrophy
Rationale: Atrophy occurs when cells shrink due to decreased use,
reduced blood supply, loss of hormonal stimulation, or inadequate
nutrition.
5. Which type of cellular adaptation involves an increase in the
number of cells?
A. Hypertrophy
B. Metaplasia
C. Hyperplasia
D. Necrosis
Rationale: Hyperplasia is an increase in cell number caused by
increased cell division. It may occur as a normal response, such as
breast tissue growth during pregnancy, or as a pathological process.
, 6. A patient with chronic acid reflux develops replacement of normal
esophageal cells with a different cell type. This process is called:
A. Dysplasia
B. Hypertrophy
C. Metaplasia
D. Apoptosis
Rationale: Metaplasia is a reversible adaptation in which one mature
cell type changes into another better suited to tolerate stress. Chronic
irritation can trigger this process.
7. Which process describes programmed cell death?
A. Necrosis
B. Inflammation
C. Apoptosis
D. Cellular swelling
Rationale: Apoptosis is controlled, programmed cell death that
removes damaged or unnecessary cells without causing significant
inflammation.
8. Necrosis differs from apoptosis because necrosis:
