W G U P AT H O P H Y S I O L O G Y · O B J E C T I V E A S S E S S M E N T
D236 OAV2
Exam Study
Guide
D236 · V2 · 2026
A comprehensive 150-question multiple-choice practice
exam with expert rationales covering every body system
tested on the WGU Pathophysiology Objective Assessment —
cellular adaptation, inflammation, immune, cardiovascular,
respiratory, renal, gastrointestinal, hepatic, neurologic,
hematologic, endocrine, and musculoskeletal
pathophysiology.
150
MCQ QU ES TI ON S
WESTERN GOVERNORS U NI VERSI TY
PATH OP H YS I OL OGY · D 236
E X P E RT RAT I O N A L E S · S T U D Y G U I D E 1 5 0 Q UE STI O N S · CO N TI N UO US E XAM
,D236 OA V2 — WGU Pathophysiology 150-Question Practice Exam
150 Multiple-Choice Questions with Expert Rationales
D236 OA V2 — WGU Pathophysiology Objective Assessment (2026 Edition) · Mixed difficulty · ~25%
case-based
Question 1
A 25-year-old male presents with a 3 cm mass in the liver that is composed
entirely of mature hepatocytes but is sharply demarcated from the surrounding
normal parenchyma. There is no capsule invasion. What is the most likely
diagnosis?
A. Hepatocellular carcinoma
B. Liver cell adenoma
C. Nodular hyperplasia
D. Metastatic deposit
CORRECT ANSWER B. Liver cell adenoma
EXPERT RATIONALE
A sharply demarcated mass of mature, well-differentiated hepatocytes with no capsular invasion is the textbook description of a
liver cell adenoma, a benign neoplasm. Hepatocellular carcinoma (A) would show cytologic atypia, mitotic figures, and capsular
or vascular invasion. Nodular hyperplasia (C) is a regenerative response to injury, not a true neoplasm, and is typically
surrounded by fibrous septa. Metastatic deposit (D) would not be composed of hepatocytes; metastases retain the morphology of
their primary site.
Question 2
Which cellular adaptation is most characteristic of skeletal muscle in response
to chronic endurance exercise training?
A. Atrophy
B. Hypertrophy
C. Metaplasia
D. Dysplasia
CORRECT ANSWER B. Hypertrophy
EXPERT RATIONALE
Endurance exercise chronically increases workload on skeletal muscle, stimulating increased protein synthesis and enlargement of
individual myofibers, which is hypertrophy (B). Atrophy (A) is shrinkage from disuse or denervation. Metaplasia (C) is the
reversible replacement of one differentiated cell type with another, seen in Barrett esophagus or bronchus, not in muscle.
Dysplasia (D) is disordered growth with cytologic atypia and is considered premalignant, not a physiologic adaptation to exercise.
D236 Pathophysiology · Expert Rationales Page 2
,D236 OA V2 — WGU Pathophysiology 150-Question Practice Exam
Question 3
A 60-year-old smoker undergoes bronchoscopy. Biopsy of the bronchial
epithelium reveals replacement of the normal ciliated pseudostratified
columnar epithelium with stratified squamous epithelium. This is an example
of:
A. Anaplasia
B. Dysplasia
D236 Pathophysiology · Expert Rationales Page 3
, D236 OA V2 — WGU Pathophysiology 150-Question Practice Exam
C. Metaplasia
D. Neoplasia
CORRECT ANSWER C. Metaplasia
EXPERT RATIONALE
Replacement of one differentiated cell type (ciliated pseudostratified columnar) with another (stratified squamous) in response to
chronic irritation from smoking is metaplasia (C). Anaplasia (A) is lack of differentiation, a hallmark of malignancy. Dysplasia
(D) is disordered maturation with atypia within the same cell line (e.g., squamous dysplasia on top of metaplasia). Neoplasia (D)
implies a clonal proliferation forming a discrete mass, which is not yet present here, though metaplasia may progress to dysplasia
and eventually carcinoma.
Question 4
A 55-year-old male has chronic gastroesophageal reflux. Esophageal biopsy
reveals intestinal-type goblet cells replacing the normal squamous epithelium.
This change is best described as:
A. Hyperplasia
B. Metaplasia with increased risk of adenocarcinoma
C. Atrophy with irreversible damage
D. Dysplasia with carcinoma in situ
CORRECT ANSWER B. Metaplasia with increased risk of adenocarcinoma
EXPERT RATIONALE
Replacement of squamous epithelium with intestinal-type goblet cells (specialized columnar epithelium) in the distal esophagus is
Barrett esophagus, an example of metaplasia (B) caused by chronic acid exposure. Critically, Barrett metaplasia carries a
significantly increased risk of progression to esophageal adenocarcinoma. Hyperplasia (A) is increased cell number in the same
tissue. Atrophy (C) is shrinkage, not replacement. Dysplasia with carcinoma in situ (D) is a later premalignant/malignant stage
that may follow Barrett but is not yet the diagnosis here.
Question 5
Liquefactive necrosis is the characteristic pattern of cell death in which of the
following organs following ischemic injury?
A. Heart
B. Kidney
C. Brain
D. Liver
D236 Pathophysiology · Expert Rationales Page 4
D236 OAV2
Exam Study
Guide
D236 · V2 · 2026
A comprehensive 150-question multiple-choice practice
exam with expert rationales covering every body system
tested on the WGU Pathophysiology Objective Assessment —
cellular adaptation, inflammation, immune, cardiovascular,
respiratory, renal, gastrointestinal, hepatic, neurologic,
hematologic, endocrine, and musculoskeletal
pathophysiology.
150
MCQ QU ES TI ON S
WESTERN GOVERNORS U NI VERSI TY
PATH OP H YS I OL OGY · D 236
E X P E RT RAT I O N A L E S · S T U D Y G U I D E 1 5 0 Q UE STI O N S · CO N TI N UO US E XAM
,D236 OA V2 — WGU Pathophysiology 150-Question Practice Exam
150 Multiple-Choice Questions with Expert Rationales
D236 OA V2 — WGU Pathophysiology Objective Assessment (2026 Edition) · Mixed difficulty · ~25%
case-based
Question 1
A 25-year-old male presents with a 3 cm mass in the liver that is composed
entirely of mature hepatocytes but is sharply demarcated from the surrounding
normal parenchyma. There is no capsule invasion. What is the most likely
diagnosis?
A. Hepatocellular carcinoma
B. Liver cell adenoma
C. Nodular hyperplasia
D. Metastatic deposit
CORRECT ANSWER B. Liver cell adenoma
EXPERT RATIONALE
A sharply demarcated mass of mature, well-differentiated hepatocytes with no capsular invasion is the textbook description of a
liver cell adenoma, a benign neoplasm. Hepatocellular carcinoma (A) would show cytologic atypia, mitotic figures, and capsular
or vascular invasion. Nodular hyperplasia (C) is a regenerative response to injury, not a true neoplasm, and is typically
surrounded by fibrous septa. Metastatic deposit (D) would not be composed of hepatocytes; metastases retain the morphology of
their primary site.
Question 2
Which cellular adaptation is most characteristic of skeletal muscle in response
to chronic endurance exercise training?
A. Atrophy
B. Hypertrophy
C. Metaplasia
D. Dysplasia
CORRECT ANSWER B. Hypertrophy
EXPERT RATIONALE
Endurance exercise chronically increases workload on skeletal muscle, stimulating increased protein synthesis and enlargement of
individual myofibers, which is hypertrophy (B). Atrophy (A) is shrinkage from disuse or denervation. Metaplasia (C) is the
reversible replacement of one differentiated cell type with another, seen in Barrett esophagus or bronchus, not in muscle.
Dysplasia (D) is disordered growth with cytologic atypia and is considered premalignant, not a physiologic adaptation to exercise.
D236 Pathophysiology · Expert Rationales Page 2
,D236 OA V2 — WGU Pathophysiology 150-Question Practice Exam
Question 3
A 60-year-old smoker undergoes bronchoscopy. Biopsy of the bronchial
epithelium reveals replacement of the normal ciliated pseudostratified
columnar epithelium with stratified squamous epithelium. This is an example
of:
A. Anaplasia
B. Dysplasia
D236 Pathophysiology · Expert Rationales Page 3
, D236 OA V2 — WGU Pathophysiology 150-Question Practice Exam
C. Metaplasia
D. Neoplasia
CORRECT ANSWER C. Metaplasia
EXPERT RATIONALE
Replacement of one differentiated cell type (ciliated pseudostratified columnar) with another (stratified squamous) in response to
chronic irritation from smoking is metaplasia (C). Anaplasia (A) is lack of differentiation, a hallmark of malignancy. Dysplasia
(D) is disordered maturation with atypia within the same cell line (e.g., squamous dysplasia on top of metaplasia). Neoplasia (D)
implies a clonal proliferation forming a discrete mass, which is not yet present here, though metaplasia may progress to dysplasia
and eventually carcinoma.
Question 4
A 55-year-old male has chronic gastroesophageal reflux. Esophageal biopsy
reveals intestinal-type goblet cells replacing the normal squamous epithelium.
This change is best described as:
A. Hyperplasia
B. Metaplasia with increased risk of adenocarcinoma
C. Atrophy with irreversible damage
D. Dysplasia with carcinoma in situ
CORRECT ANSWER B. Metaplasia with increased risk of adenocarcinoma
EXPERT RATIONALE
Replacement of squamous epithelium with intestinal-type goblet cells (specialized columnar epithelium) in the distal esophagus is
Barrett esophagus, an example of metaplasia (B) caused by chronic acid exposure. Critically, Barrett metaplasia carries a
significantly increased risk of progression to esophageal adenocarcinoma. Hyperplasia (A) is increased cell number in the same
tissue. Atrophy (C) is shrinkage, not replacement. Dysplasia with carcinoma in situ (D) is a later premalignant/malignant stage
that may follow Barrett but is not yet the diagnosis here.
Question 5
Liquefactive necrosis is the characteristic pattern of cell death in which of the
following organs following ischemic injury?
A. Heart
B. Kidney
C. Brain
D. Liver
D236 Pathophysiology · Expert Rationales Page 4
