WGU D027 Advanced Pathopharmacology Study Guide
2025/2026 | Questions & 100% Verified Answers |
Graded A+|Guaranteed Pass!!
SECTION 1: FOUNDATIONS OF PATHOPHYSIOLOGY & GENETICS
Q1. Which of the following best describes the term "iatrogenic
condition"?
A. A genetic disorder inherited from a parent
B. A hospital-acquired infection
C. A condition resulting from medical treatment or intervention
D. A congenital anomaly present at birth
Correct Answer: C
Rationale: Iatrogenic conditions are adverse outcomes directly caused by
medical diagnosis, treatment, or intervention—not the patient's underlying
disease. Examples include medication side effects (e.g., severe nausea from
an antibiotic), surgical complications, or radiation-induced injury. Option A
refers to genetic disorders, Option B describes nosocomial infections, and
Option D describes congenital anomalies. Recognizing iatrogenic
conditions is critical for patient safety and quality improvement .
Q2. A patient develops tissue death in the lower leg following
prolonged lack of blood supply after a vascular injury. This process is
best described as:
A. Apoptosis
B. Necrosis
,C. Atrophy
D. Metaplasia
Correct Answer: B
Rationale: Necrosis is pathologic cell death caused by external factors such
as ischemia, injury, infection, or toxins. It is an uncontrolled process that
triggers inflammation. Apoptosis (A) is programmed, controlled cell death
that does not cause inflammation. Atrophy (C) is a decrease in cell size from
disuse. Metaplasia (D) is the replacement of one cell type with another .
Q3. An increase in the number of cells in a tissue is called:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
Correct Answer: B
Rationale: Hyperplasia is an increase in cell NUMBER within a tissue, often
in response to a stimulus (e.g., hormonal stimulation causing endometrial
thickening). Hypertrophy (A) is an increase in cell SIZE (e.g., cardiac muscle
enlargement from hypertension). Metaplasia (C) is a reversible change
where one adult cell type replaces another (e.g., squamous metaplasia in
smokers' airways). Atrophy (D) is a decrease in cell size or number from
disuse or reduced nutrition .
Q4. A 20-year-old male presents with progressive muscle weakness,
difficulty running and jumping, walking on his toes since childhood,
and difficulty rising from a sitting position. His family history is
negative for genetic diseases. Which condition is most likely?
,A. Duchenne muscular dystrophy
B. Becker muscular dystrophy
C. Myasthenia gravis
D. Multiple sclerosis
Correct Answer: B
Rationale: Becker muscular dystrophy (BMD) is an X-linked recessive
disorder caused by dystrophin gene mutations. Unlike Duchenne MD (A),
BMD has later onset and slower progression. Patients often walk on their
toes, have difficulty with running/jumping (especially in adolescence), and
struggle to rise from sitting (Gowers' sign). Family history may be negative
due to spontaneous mutations or carrier females. Myasthenia gravis (C)
affects neuromuscular junctions with fluctuating weakness and ptosis.
Multiple sclerosis (D) is an autoimmune demyelinating disease of the CNS .
Q5. A 45-year-old female is diagnosed with Cushing disease. Which lab
abnormality would be present?
A. Decreased ACTH
B. Increased ACTH
C. Increased cortisol
D. Decreased cortisol
Correct Answer: C
Rationale: Cushing disease is caused by a pituitary adenoma secreting
excess ACTH, which stimulates the adrenal cortex to overproduce cortisol.
The hallmark laboratory finding is hypercortisolism (increased cortisol).
Increased ACTH (B) is also present in pituitary Cushing disease, but cortisol
is the direct abnormality being asked about. Decreased cortisol (D) is seen
in Addison's disease. Decreased ACTH (A) is seen in adrenal tumors causing
Cushing syndrome .
, Q6. Which statement best describes the inheritance pattern of an
autosomal dominant disorder?
A. Both parents must be carriers for the child to be affected
B. Only males are affected, and the trait skips generations
C. One affected parent gives a 50% chance of passing the disorder to each
child
D. The disorder only manifests if the child inherits two recessive alleles
Correct Answer: C
Rationale: In autosomal dominant disorders, only one copy of the mutated
allele is needed for expression. If one parent is affected (heterozygous),
there is a 50% transmission risk to offspring per pregnancy. Option A
describes autosomal recessive inheritance. Option B describes X-linked
recessive inheritance (males affected, carrier females). Option D describes
recessive inheritance requiring two copies .
Q7. A newborn male is diagnosed with 47,XXY karyotype. This
condition is known as:
A. Turner syndrome
B. Klinefelter syndrome
C. Fragile X syndrome
D. Down syndrome
Correct Answer: B
Rationale: Klinefelter syndrome (47,XXY karyotype) is a chromosomal
condition affecting males, characterized by an extra X chromosome. Clinical
features include tall stature, small testes, gynecomastia, infertility, learning
disabilities, and female-like body habitus. Turner syndrome (A) affects
2025/2026 | Questions & 100% Verified Answers |
Graded A+|Guaranteed Pass!!
SECTION 1: FOUNDATIONS OF PATHOPHYSIOLOGY & GENETICS
Q1. Which of the following best describes the term "iatrogenic
condition"?
A. A genetic disorder inherited from a parent
B. A hospital-acquired infection
C. A condition resulting from medical treatment or intervention
D. A congenital anomaly present at birth
Correct Answer: C
Rationale: Iatrogenic conditions are adverse outcomes directly caused by
medical diagnosis, treatment, or intervention—not the patient's underlying
disease. Examples include medication side effects (e.g., severe nausea from
an antibiotic), surgical complications, or radiation-induced injury. Option A
refers to genetic disorders, Option B describes nosocomial infections, and
Option D describes congenital anomalies. Recognizing iatrogenic
conditions is critical for patient safety and quality improvement .
Q2. A patient develops tissue death in the lower leg following
prolonged lack of blood supply after a vascular injury. This process is
best described as:
A. Apoptosis
B. Necrosis
,C. Atrophy
D. Metaplasia
Correct Answer: B
Rationale: Necrosis is pathologic cell death caused by external factors such
as ischemia, injury, infection, or toxins. It is an uncontrolled process that
triggers inflammation. Apoptosis (A) is programmed, controlled cell death
that does not cause inflammation. Atrophy (C) is a decrease in cell size from
disuse. Metaplasia (D) is the replacement of one cell type with another .
Q3. An increase in the number of cells in a tissue is called:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Atrophy
Correct Answer: B
Rationale: Hyperplasia is an increase in cell NUMBER within a tissue, often
in response to a stimulus (e.g., hormonal stimulation causing endometrial
thickening). Hypertrophy (A) is an increase in cell SIZE (e.g., cardiac muscle
enlargement from hypertension). Metaplasia (C) is a reversible change
where one adult cell type replaces another (e.g., squamous metaplasia in
smokers' airways). Atrophy (D) is a decrease in cell size or number from
disuse or reduced nutrition .
Q4. A 20-year-old male presents with progressive muscle weakness,
difficulty running and jumping, walking on his toes since childhood,
and difficulty rising from a sitting position. His family history is
negative for genetic diseases. Which condition is most likely?
,A. Duchenne muscular dystrophy
B. Becker muscular dystrophy
C. Myasthenia gravis
D. Multiple sclerosis
Correct Answer: B
Rationale: Becker muscular dystrophy (BMD) is an X-linked recessive
disorder caused by dystrophin gene mutations. Unlike Duchenne MD (A),
BMD has later onset and slower progression. Patients often walk on their
toes, have difficulty with running/jumping (especially in adolescence), and
struggle to rise from sitting (Gowers' sign). Family history may be negative
due to spontaneous mutations or carrier females. Myasthenia gravis (C)
affects neuromuscular junctions with fluctuating weakness and ptosis.
Multiple sclerosis (D) is an autoimmune demyelinating disease of the CNS .
Q5. A 45-year-old female is diagnosed with Cushing disease. Which lab
abnormality would be present?
A. Decreased ACTH
B. Increased ACTH
C. Increased cortisol
D. Decreased cortisol
Correct Answer: C
Rationale: Cushing disease is caused by a pituitary adenoma secreting
excess ACTH, which stimulates the adrenal cortex to overproduce cortisol.
The hallmark laboratory finding is hypercortisolism (increased cortisol).
Increased ACTH (B) is also present in pituitary Cushing disease, but cortisol
is the direct abnormality being asked about. Decreased cortisol (D) is seen
in Addison's disease. Decreased ACTH (A) is seen in adrenal tumors causing
Cushing syndrome .
, Q6. Which statement best describes the inheritance pattern of an
autosomal dominant disorder?
A. Both parents must be carriers for the child to be affected
B. Only males are affected, and the trait skips generations
C. One affected parent gives a 50% chance of passing the disorder to each
child
D. The disorder only manifests if the child inherits two recessive alleles
Correct Answer: C
Rationale: In autosomal dominant disorders, only one copy of the mutated
allele is needed for expression. If one parent is affected (heterozygous),
there is a 50% transmission risk to offspring per pregnancy. Option A
describes autosomal recessive inheritance. Option B describes X-linked
recessive inheritance (males affected, carrier females). Option D describes
recessive inheritance requiring two copies .
Q7. A newborn male is diagnosed with 47,XXY karyotype. This
condition is known as:
A. Turner syndrome
B. Klinefelter syndrome
C. Fragile X syndrome
D. Down syndrome
Correct Answer: B
Rationale: Klinefelter syndrome (47,XXY karyotype) is a chromosomal
condition affecting males, characterized by an extra X chromosome. Clinical
features include tall stature, small testes, gynecomastia, infertility, learning
disabilities, and female-like body habitus. Turner syndrome (A) affects
