WGU D236 Pathophysiology Exam – Western
Governors University Pathophysiology –
2026/2027
Total Questions: 95 | Passing Standard: 72% | Time Allotted: 3 hours
Instructions: Select the best answer for each multiple-choice question. Each
question is designed to assess mastery of advanced pathophysiological
concepts including cellular injury, inflammation, fluid/electrolyte imbalances,
acid-base disorders, immune dysfunction, and system-based pathophysiology
across cardiovascular, respiratory, renal, endocrine, neurological,
gastrointestinal, and hematologic systems.
Question 1
Describe how your body responds to an infection.
A. B cells produce cytokines, which stimulate T cells. T cells produce
antibodies.
B. T cells produce cytokines, which stimulate B cells. B cells produce
antibodies.
C. Macrophages directly produce antibodies without T cell involvement.
D. Natural killer cells produce antibodies to target infected cells.
Correct Answer: B
Rationale: In the adaptive immune response, T cells recognize antigens and
produce cytokines that activate B cells. B cells then differentiate into plasma
cells that produce antibodies targeting the specific pathogen.
Teaching Point: The immune response to infection involves coordinated
action between T cells (cytokine production) and B cells (antibody
production).
Question 2
,Identify the role of DNA changes in congenital abnormalities.
A. Environmental factors alone cause all congenital abnormalities
B. Mutations in genes or chromosomal abnormalities disrupt normal
development
C. Congenital abnormalities are always inherited from both parents
D. DNA changes only affect adult-onset diseases
Correct Answer: B
Rationale: Congenital abnormalities result from alterations of DNA, including
gene mutations or chromosomal abnormalities that disrupt normal fetal
development.
Teaching Point: DNA mutations and chromosomal abnormalities are primary
causes of congenital abnormalities.
Question 3
How does developmental disruption cause congenital abnormalities?
A. Through alterations of DNA
B. Through maternal nutrition only
C. Through environmental toxins exclusively
D. Through spontaneous regression
Correct Answer: A
Rationale: Developmental disruption that leads to congenital abnormalities
occurs through alterations of DNA, which may be genetic, chromosomal, or
teratogenic in origin.
Teaching Point: DNA alterations are the fundamental mechanism underlying
developmental disruptions.
Question 4
Explain factors that disrupt homeostasis and how disruptions affect wellbeing.
Which of the following is an example of a homeostatic disruption?
,A. Fluid and electrolyte shifts causing nausea, vomiting, or dysrhythmias
B. Normal daily fluctuations in body temperature
C. Regular sleep-wake cycles
D. Mild hunger between meals
Correct Answer: A
Rationale: Fluid and electrolyte imbalances represent a significant
homeostatic disruption that can cause clinical manifestations including
nausea, vomiting, and cardiac dysrhythmias due to altered cellular function.
Teaching Point: Homeostatic disruptions manifest as physiological
derangements affecting multiple body systems.
Question 5
Which statement best describes the etiology of a disease?
A. The predicted outcome of the disease process
B. The underlying cause or origin of the disease
C. The clinical manifestations of the disease
D. The structural changes caused by the disease
Correct Answer: B
Rationale: Etiology refers to the cause or origin of a disease, including
genetic, environmental, infectious, or idiopathic factors. Pathogenesis
describes the development of the disease, and prognosis describes the
predicted outcome.
Teaching Point: Etiology = cause of disease; pathogenesis = development of
disease.
Question 6
What is the definition of pathogenesis?
A. The cause of the disease
B. The predicted outcome of the disease
, C. The mechanism by which a disease develops
D. The clinical signs and symptoms
Correct Answer: C
Rationale: Pathogenesis is the mechanism by which a disease develops,
including the sequence of events from initial cause to clinical manifestations.
Teaching Point: Pathogenesis describes the "how" of disease development.
Question 7
Define homeostasis and explain its importance in maintaining optimal
physiological health.
A. Homeostasis is the body's ability to maintain a stable internal environment
despite external changes
B. Homeostasis is the body's response to external stressors only
C. Homeostasis refers to the body's immune response
D. Homeostasis is the process of cellular reproduction
Correct Answer: A
Rationale: Homeostasis is the dynamic maintenance of a stable internal
environment through regulatory mechanisms. It is essential for optimal
physiological function as it keeps variables such as temperature, pH, and
electrolyte concentrations within narrow ranges.
Teaching Point: Homeostasis maintains internal stability for proper cellular
and organ function.
Question 8
Which of the following is an example of cellular adaptation to stress?
A. Atrophy
B. Hypertrophy
C. Hyperplasia
D. All of the above
Governors University Pathophysiology –
2026/2027
Total Questions: 95 | Passing Standard: 72% | Time Allotted: 3 hours
Instructions: Select the best answer for each multiple-choice question. Each
question is designed to assess mastery of advanced pathophysiological
concepts including cellular injury, inflammation, fluid/electrolyte imbalances,
acid-base disorders, immune dysfunction, and system-based pathophysiology
across cardiovascular, respiratory, renal, endocrine, neurological,
gastrointestinal, and hematologic systems.
Question 1
Describe how your body responds to an infection.
A. B cells produce cytokines, which stimulate T cells. T cells produce
antibodies.
B. T cells produce cytokines, which stimulate B cells. B cells produce
antibodies.
C. Macrophages directly produce antibodies without T cell involvement.
D. Natural killer cells produce antibodies to target infected cells.
Correct Answer: B
Rationale: In the adaptive immune response, T cells recognize antigens and
produce cytokines that activate B cells. B cells then differentiate into plasma
cells that produce antibodies targeting the specific pathogen.
Teaching Point: The immune response to infection involves coordinated
action between T cells (cytokine production) and B cells (antibody
production).
Question 2
,Identify the role of DNA changes in congenital abnormalities.
A. Environmental factors alone cause all congenital abnormalities
B. Mutations in genes or chromosomal abnormalities disrupt normal
development
C. Congenital abnormalities are always inherited from both parents
D. DNA changes only affect adult-onset diseases
Correct Answer: B
Rationale: Congenital abnormalities result from alterations of DNA, including
gene mutations or chromosomal abnormalities that disrupt normal fetal
development.
Teaching Point: DNA mutations and chromosomal abnormalities are primary
causes of congenital abnormalities.
Question 3
How does developmental disruption cause congenital abnormalities?
A. Through alterations of DNA
B. Through maternal nutrition only
C. Through environmental toxins exclusively
D. Through spontaneous regression
Correct Answer: A
Rationale: Developmental disruption that leads to congenital abnormalities
occurs through alterations of DNA, which may be genetic, chromosomal, or
teratogenic in origin.
Teaching Point: DNA alterations are the fundamental mechanism underlying
developmental disruptions.
Question 4
Explain factors that disrupt homeostasis and how disruptions affect wellbeing.
Which of the following is an example of a homeostatic disruption?
,A. Fluid and electrolyte shifts causing nausea, vomiting, or dysrhythmias
B. Normal daily fluctuations in body temperature
C. Regular sleep-wake cycles
D. Mild hunger between meals
Correct Answer: A
Rationale: Fluid and electrolyte imbalances represent a significant
homeostatic disruption that can cause clinical manifestations including
nausea, vomiting, and cardiac dysrhythmias due to altered cellular function.
Teaching Point: Homeostatic disruptions manifest as physiological
derangements affecting multiple body systems.
Question 5
Which statement best describes the etiology of a disease?
A. The predicted outcome of the disease process
B. The underlying cause or origin of the disease
C. The clinical manifestations of the disease
D. The structural changes caused by the disease
Correct Answer: B
Rationale: Etiology refers to the cause or origin of a disease, including
genetic, environmental, infectious, or idiopathic factors. Pathogenesis
describes the development of the disease, and prognosis describes the
predicted outcome.
Teaching Point: Etiology = cause of disease; pathogenesis = development of
disease.
Question 6
What is the definition of pathogenesis?
A. The cause of the disease
B. The predicted outcome of the disease
, C. The mechanism by which a disease develops
D. The clinical signs and symptoms
Correct Answer: C
Rationale: Pathogenesis is the mechanism by which a disease develops,
including the sequence of events from initial cause to clinical manifestations.
Teaching Point: Pathogenesis describes the "how" of disease development.
Question 7
Define homeostasis and explain its importance in maintaining optimal
physiological health.
A. Homeostasis is the body's ability to maintain a stable internal environment
despite external changes
B. Homeostasis is the body's response to external stressors only
C. Homeostasis refers to the body's immune response
D. Homeostasis is the process of cellular reproduction
Correct Answer: A
Rationale: Homeostasis is the dynamic maintenance of a stable internal
environment through regulatory mechanisms. It is essential for optimal
physiological function as it keeps variables such as temperature, pH, and
electrolyte concentrations within narrow ranges.
Teaching Point: Homeostasis maintains internal stability for proper cellular
and organ function.
Question 8
Which of the following is an example of cellular adaptation to stress?
A. Atrophy
B. Hypertrophy
C. Hyperplasia
D. All of the above
