ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027
OBJECTIVE ASSESSMENT - EXAM
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501
WALDEN UNIVERSITY COMPLETE ACTUAL EXAM
QUESTIONS AND DETAILED ANSWERS 2026/2027
150 100%
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Cellular Adaptation & Injury Cardiovascular & Respiratory Pathophysiology
Genetics & Epigenetics Neurological & Endocrine Disorders
Fluid & Electrolyte Imbalances Immune, Hypersensitivity & Sepsis
COVER PAGE - 1
, SECTION 1 | Cellular Processes and Adaptation
Q1-Q30 | ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 2026/2027
Q1 Question 1 of 150
A 68-year-old retired teacher has worn a below-knee cast for six weeks after a tibial fracture. When the
cast is removed, her calf circumference is 3 cm smaller than the contralateral side. Which cellular
process best explains the muscle size reduction?
A. Decreased cell size from reduced protein synthesis and organelle number
B. Increased cell number with smaller individual myocyte diameter
C. Reversible replacement of muscle by mature adipose tissue
D. Irreversible coagulative necrosis of myocyte fibers
Correct Answer: A
Rationale:
Disuse atrophy shrinks existing cells by lowering protein synthesis and ribosome/organelle content, producing
the visible calf wasting. Hyperplasia would raise cell number, not shrink the muscle, and neither fat replacement
nor necrosis explains reversible disuse wasting.
Q2 Question 2 of 150
A 55-year-old man suffers a complete L4-L5 nerve root transection in a motorcycle crash. Six months
later, biopsy of the affected gastrocnemius shows markedly shrunken fibers with pyknotic nuclear
clusters. Which adaptive mechanism is operating?
A. Denervation atrophy from loss of trophic neural signals
B. Compensatory hypertrophy of surviving motor units
C. Hormonal hyperplasia driven by insulin-like growth factor
D. Squamous metaplasia of denervated sarcolemma
Correct Answer: B
Rationale:
Loss of electrical and trophic input from motor neurons produces denervation atrophy, characterized by fiber
shrinkage and pyknotic nuclear clumping. Hypertrophy requires preserved neural input, and metaplasia does not
occur in post-mitotic skeletal muscle.
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 2 of 78
, Q3 Question 3 of 150
A 72-year-old woman with long-standing hypertension has an echocardiogram showing a left
ventricular wall thickness of 16 mm (normal less than 11 mm) with normal cavity size. What cellular
mechanism underlies this finding?
A. Hypertrophy from increased synthesis of contractile proteins
B. Metaplasia of endothelial cells to smooth muscle
C. Hyperplasia from myocyte re-entry into the cell cycle
D. Atrophy of the right ventricle secondary to septal shift
Correct Answer: C
Rationale:
Pressure overload drives cardiac myocytes, which are terminally differentiated, to enlarge by adding sarcomeres
in parallel, increasing wall thickness. Myocytes cannot divide, so hyperplasia is incorrect, and metaplasia or
atrophy would not produce concentric thickening.
Q4 Question 4 of 150
A 28-year-old gravida 2 para 1 at 36 weeks gestation has a uterus weighing 1,100 g compared with 70
g before pregnancy. Histology reveals both larger and more numerous smooth muscle cells. Which
combination of adaptations is occurring?
A. Hyperplasia only, because estrogen inhibits cell enlargement
B. Both hypertrophy and hyperplasia under estrogen stimulation
C. Atrophy of connective tissue stroma with compensatory hyperplasia
D. Hypertrophy only, because smooth muscle cannot divide
Correct Answer: D
Rationale:
Estrogen-driven uterine enlargement during pregnancy involves both smooth muscle hypertrophy and
hyperplasia, since uterine smooth muscle retains proliferative capacity. Smooth muscle can undergo
hyperplasia, and atrophy of stroma would not produce the massive weight gain observed.
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 3 of 78
, Q5 Question 5 of 150
A 45-year-old man undergoes partial hepatectomy for a benign adenoma. Eight weeks later, imaging
shows the liver has regained 85 percent of its original volume. Which cellular process primarily restores
hepatic mass?
A. Compensatory hyperplasia of remaining hepatocytes re-entering the cell cycle
B. Metaplasia of portal fibroblasts into hepatocyte-like cells
C. Dystrophic calcification of the resection margin
D. Atrophy of the contralateral lobe reducing apparent deficit
Correct Answer: A
Rationale:
Mature hepatocytes are quiescent but retain replicative capacity, and loss of hepatic mass triggers
compensatory hyperplasia that restores liver volume. Metaplasia does not generate functional hepatocytes, and
calcification or atrophy would worsen rather than restore mass.
Q6 Question 6 of 150
A 52-year-old woman with polycystic ovarian syndrome and chronic unopposed estrogen exposure has
an endometrial biopsy showing crowded glands with increased gland-to-stroma ratio. Which adaptive
process is the pathologist describing?
A. Squamous metaplasia of the endometrial surface
B. Hormonal hyperplasia of endometrial glands driven by estrogen
C. Atrophy from progesterone excess
D. Coagulative necrosis of the stratum basale
Correct Answer: B
Rationale:
Unopposed estrogen drives glandular epithelial hyperplasia of the endometrium, increasing gland density
relative to stroma and raising later carcinoma risk. Progesterone promotes secretory changes rather than
hyperplasia, and metaplasia or necrosis is not characteristic here.
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 4 of 78
OBJECTIVE ASSESSMENT - EXAM
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501
WALDEN UNIVERSITY COMPLETE ACTUAL EXAM
QUESTIONS AND DETAILED ANSWERS 2026/2027
150 100%
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Cellular Adaptation & Injury Cardiovascular & Respiratory Pathophysiology
Genetics & Epigenetics Neurological & Endocrine Disorders
Fluid & Electrolyte Imbalances Immune, Hypersensitivity & Sepsis
COVER PAGE - 1
, SECTION 1 | Cellular Processes and Adaptation
Q1-Q30 | ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 2026/2027
Q1 Question 1 of 150
A 68-year-old retired teacher has worn a below-knee cast for six weeks after a tibial fracture. When the
cast is removed, her calf circumference is 3 cm smaller than the contralateral side. Which cellular
process best explains the muscle size reduction?
A. Decreased cell size from reduced protein synthesis and organelle number
B. Increased cell number with smaller individual myocyte diameter
C. Reversible replacement of muscle by mature adipose tissue
D. Irreversible coagulative necrosis of myocyte fibers
Correct Answer: A
Rationale:
Disuse atrophy shrinks existing cells by lowering protein synthesis and ribosome/organelle content, producing
the visible calf wasting. Hyperplasia would raise cell number, not shrink the muscle, and neither fat replacement
nor necrosis explains reversible disuse wasting.
Q2 Question 2 of 150
A 55-year-old man suffers a complete L4-L5 nerve root transection in a motorcycle crash. Six months
later, biopsy of the affected gastrocnemius shows markedly shrunken fibers with pyknotic nuclear
clusters. Which adaptive mechanism is operating?
A. Denervation atrophy from loss of trophic neural signals
B. Compensatory hypertrophy of surviving motor units
C. Hormonal hyperplasia driven by insulin-like growth factor
D. Squamous metaplasia of denervated sarcolemma
Correct Answer: B
Rationale:
Loss of electrical and trophic input from motor neurons produces denervation atrophy, characterized by fiber
shrinkage and pyknotic nuclear clumping. Hypertrophy requires preserved neural input, and metaplasia does not
occur in post-mitotic skeletal muscle.
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 2 of 78
, Q3 Question 3 of 150
A 72-year-old woman with long-standing hypertension has an echocardiogram showing a left
ventricular wall thickness of 16 mm (normal less than 11 mm) with normal cavity size. What cellular
mechanism underlies this finding?
A. Hypertrophy from increased synthesis of contractile proteins
B. Metaplasia of endothelial cells to smooth muscle
C. Hyperplasia from myocyte re-entry into the cell cycle
D. Atrophy of the right ventricle secondary to septal shift
Correct Answer: C
Rationale:
Pressure overload drives cardiac myocytes, which are terminally differentiated, to enlarge by adding sarcomeres
in parallel, increasing wall thickness. Myocytes cannot divide, so hyperplasia is incorrect, and metaplasia or
atrophy would not produce concentric thickening.
Q4 Question 4 of 150
A 28-year-old gravida 2 para 1 at 36 weeks gestation has a uterus weighing 1,100 g compared with 70
g before pregnancy. Histology reveals both larger and more numerous smooth muscle cells. Which
combination of adaptations is occurring?
A. Hyperplasia only, because estrogen inhibits cell enlargement
B. Both hypertrophy and hyperplasia under estrogen stimulation
C. Atrophy of connective tissue stroma with compensatory hyperplasia
D. Hypertrophy only, because smooth muscle cannot divide
Correct Answer: D
Rationale:
Estrogen-driven uterine enlargement during pregnancy involves both smooth muscle hypertrophy and
hyperplasia, since uterine smooth muscle retains proliferative capacity. Smooth muscle can undergo
hyperplasia, and atrophy of stroma would not produce the massive weight gain observed.
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 3 of 78
, Q5 Question 5 of 150
A 45-year-old man undergoes partial hepatectomy for a benign adenoma. Eight weeks later, imaging
shows the liver has regained 85 percent of its original volume. Which cellular process primarily restores
hepatic mass?
A. Compensatory hyperplasia of remaining hepatocytes re-entering the cell cycle
B. Metaplasia of portal fibroblasts into hepatocyte-like cells
C. Dystrophic calcification of the resection margin
D. Atrophy of the contralateral lobe reducing apparent deficit
Correct Answer: A
Rationale:
Mature hepatocytes are quiescent but retain replicative capacity, and loss of hepatic mass triggers
compensatory hyperplasia that restores liver volume. Metaplasia does not generate functional hepatocytes, and
calcification or atrophy would worsen rather than restore mass.
Q6 Question 6 of 150
A 52-year-old woman with polycystic ovarian syndrome and chronic unopposed estrogen exposure has
an endometrial biopsy showing crowded glands with increased gland-to-stroma ratio. Which adaptive
process is the pathologist describing?
A. Squamous metaplasia of the endometrial surface
B. Hormonal hyperplasia of endometrial glands driven by estrogen
C. Atrophy from progesterone excess
D. Coagulative necrosis of the stratum basale
Correct Answer: B
Rationale:
Unopposed estrogen drives glandular epithelial hyperplasia of the endometrium, increasing gland density
relative to stroma and raising later carcinoma risk. Progesterone promotes secretory changes rather than
hyperplasia, and metaplasia or necrosis is not characteristic here.
ADVANCED PATHOPHYSIOLOGY MIDTERM NUR 6501 WALDEN UNIVERSITY COMPLETE ACTUAL EXAM QUESTIONS AND DETAILED ANSWERS 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 4 of 78
