NUR 2063: Essentials of Pathophysiology Final Exam Actual Exam 2026/2027 –
Complete Exam-Style Questions with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
SECTION 1: Cellular Adaptation, Injury & Neoplasia (Q1-Q15)
Q1: A 70-year-old male with prolonged immobilization of his left leg due to a hip fracture
demonstrates decreased muscle mass and reduced cell size in the quadriceps on
biopsy. Which cellular adaptation and underlying mechanism are present?
A. Hypertrophy from increased workload and protein synthesis
B. Hyperplasia from hormonal stimulation and cell division
C. Atrophy from decreased protein synthesis and increased protein degradation via
ubiquitin-proteasome pathway
D. Metaplasia from chronic irritation and stem cell reprogramming
C. Atrophy from decreased protein synthesis and increased protein degradation via
ubiquitin-proteasome pathway [CORRECT]
Correct Answer: C
Rationale: Atrophy is a decrease in cell size resulting from reduced protein synthesis
and increased protein degradation through the ubiquitin-proteasome and
autophagy-lysosome pathways. Disuse atrophy occurs from decreased workload
,(immobilization, denervation), reducing anabolic signaling and increasing catabolic
pathways. Option A (hypertrophy) involves increased cell size from increased workload,
opposite of this scenario. Option B (hyperplasia) involves increased cell number, not
size reduction. Option D (metaplasia) involves reversible replacement of one
differentiated cell type with another, typically from chronic irritation. [100% VERIFIED –
Rasmussen NUR2063 FINAL]
Q2: A 25-year-old bodybuilder demonstrates increased skeletal muscle mass with
enlarged myofibers containing increased numbers of myofilaments. Which cellular
adaptation and molecular mechanism are responsible?
A. Atrophy from decreased anabolic signaling
B. Hypertrophy from mechanical stretch and IGF-1/PI3K/Akt/mTOR pathway activation
C. Hyperplasia from satellite cell proliferation and fusion
D. Dysplasia from disordered cellular growth and loss of polarity
B. Hypertrophy from mechanical stretch and IGF-1/PI3K/Akt/mTOR pathway activation
[CORRECT]
Correct Answer: B
Rationale: Physiologic hypertrophy in skeletal muscle results from increased
mechanical load (resistance training), activating mechanotransduction pathways
including IGF-1, PI3K/Akt, and mTOR, which stimulate protein synthesis and inhibit
protein degradation (via FoxO suppression). Individual myofibers enlarge by adding
myofilaments in parallel. Option A describes atrophy. Option C (hyperplasia) occurs in
,some tissues (liver, endometrium) but adult skeletal muscle hypertrophy is primarily
through fiber enlargement, not increased fiber number. Option D (dysplasia) is
pre-neoplastic disordered growth, not adaptive hypertrophy. [100% VERIFIED –
Rasmussen NUR2063 FINAL]
Q3: A 35-year-old female with a prolactin-secreting pituitary adenoma develops bilateral
galactorrhea and amenorrhea. Which cellular adaptation in the breast tissue explains
the galactorrhea?
A. Hypertrophy of existing lactocytes from hormonal stimulation
B. Hyperplasia of mammary ductal epithelial cells from elevated prolactin
C. Metaplasia of breast stroma into glandular tissue
D. Dysplasia with disordered proliferation and atypia
B. Hyperplasia of mammary ductal epithelial cells from elevated prolactin [CORRECT]
Correct Answer: B
Rationale: Prolactin stimulates proliferation (hyperplasia) of mammary ductal and
lobular epithelial cells, increasing cell number and milk-producing capacity. Hyperplasia
is an increase in cell number in response to hormonal or growth factor stimulation. The
amenorrhea results from prolactin suppressing GnRH, causing hypogonadism. Option A
(hypertrophy) would involve enlargement of existing cells without increased number.
Option C (metaplasia) involves cell type transformation, not relevant here. Option D
(dysplasia) is pre-neoplastic with disordered architecture and cytologic atypia, not
adaptive hyperplasia. [100% VERIFIED – Rasmussen NUR2063 FINAL]
, Q4: A 55-year-old male with chronic gastroesophageal reflux disease undergoes
endoscopy showing columnar epithelium with goblet cells replacing normal squamous
epithelium in the distal esophagus. Which cellular adaptation and clinical significance
are present?
A. Dysplasia with pre-malignant potential requiring immediate resection
B. Metaplasia with reversible cell type change and increased adenocarcinoma risk
C. Hyperplasia with increased squamous cell number and protective adaptation
D. Hypertrophy with enlarged squamous cells and enhanced barrier function
B. Metaplasia with reversible cell type change and increased adenocarcinoma risk
[CORRECT]
Correct Answer: B
Rationale: Metaplasia is the reversible replacement of one differentiated cell type with
another better suited to withstand chronic stress. In Barrett's esophagus, chronic
acid/bile reflux causes squamous-to-columnar metaplasia with intestinal-type goblet
cells. While adaptive, this metaplasia increases risk of esophageal adenocarcinoma
through the dysplasia-carcinoma sequence, requiring surveillance. Option A (dysplasia)
would show cytologic atypia and architectural distortion, not yet present here. Option
C/D describe incorrect cell types and mechanisms—squamous hyperplasia/hypertrophy
do not occur in this setting. [100% VERIFIED – Rasmussen NUR2063 FINAL]
Complete Exam-Style Questions with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
SECTION 1: Cellular Adaptation, Injury & Neoplasia (Q1-Q15)
Q1: A 70-year-old male with prolonged immobilization of his left leg due to a hip fracture
demonstrates decreased muscle mass and reduced cell size in the quadriceps on
biopsy. Which cellular adaptation and underlying mechanism are present?
A. Hypertrophy from increased workload and protein synthesis
B. Hyperplasia from hormonal stimulation and cell division
C. Atrophy from decreased protein synthesis and increased protein degradation via
ubiquitin-proteasome pathway
D. Metaplasia from chronic irritation and stem cell reprogramming
C. Atrophy from decreased protein synthesis and increased protein degradation via
ubiquitin-proteasome pathway [CORRECT]
Correct Answer: C
Rationale: Atrophy is a decrease in cell size resulting from reduced protein synthesis
and increased protein degradation through the ubiquitin-proteasome and
autophagy-lysosome pathways. Disuse atrophy occurs from decreased workload
,(immobilization, denervation), reducing anabolic signaling and increasing catabolic
pathways. Option A (hypertrophy) involves increased cell size from increased workload,
opposite of this scenario. Option B (hyperplasia) involves increased cell number, not
size reduction. Option D (metaplasia) involves reversible replacement of one
differentiated cell type with another, typically from chronic irritation. [100% VERIFIED –
Rasmussen NUR2063 FINAL]
Q2: A 25-year-old bodybuilder demonstrates increased skeletal muscle mass with
enlarged myofibers containing increased numbers of myofilaments. Which cellular
adaptation and molecular mechanism are responsible?
A. Atrophy from decreased anabolic signaling
B. Hypertrophy from mechanical stretch and IGF-1/PI3K/Akt/mTOR pathway activation
C. Hyperplasia from satellite cell proliferation and fusion
D. Dysplasia from disordered cellular growth and loss of polarity
B. Hypertrophy from mechanical stretch and IGF-1/PI3K/Akt/mTOR pathway activation
[CORRECT]
Correct Answer: B
Rationale: Physiologic hypertrophy in skeletal muscle results from increased
mechanical load (resistance training), activating mechanotransduction pathways
including IGF-1, PI3K/Akt, and mTOR, which stimulate protein synthesis and inhibit
protein degradation (via FoxO suppression). Individual myofibers enlarge by adding
myofilaments in parallel. Option A describes atrophy. Option C (hyperplasia) occurs in
,some tissues (liver, endometrium) but adult skeletal muscle hypertrophy is primarily
through fiber enlargement, not increased fiber number. Option D (dysplasia) is
pre-neoplastic disordered growth, not adaptive hypertrophy. [100% VERIFIED –
Rasmussen NUR2063 FINAL]
Q3: A 35-year-old female with a prolactin-secreting pituitary adenoma develops bilateral
galactorrhea and amenorrhea. Which cellular adaptation in the breast tissue explains
the galactorrhea?
A. Hypertrophy of existing lactocytes from hormonal stimulation
B. Hyperplasia of mammary ductal epithelial cells from elevated prolactin
C. Metaplasia of breast stroma into glandular tissue
D. Dysplasia with disordered proliferation and atypia
B. Hyperplasia of mammary ductal epithelial cells from elevated prolactin [CORRECT]
Correct Answer: B
Rationale: Prolactin stimulates proliferation (hyperplasia) of mammary ductal and
lobular epithelial cells, increasing cell number and milk-producing capacity. Hyperplasia
is an increase in cell number in response to hormonal or growth factor stimulation. The
amenorrhea results from prolactin suppressing GnRH, causing hypogonadism. Option A
(hypertrophy) would involve enlargement of existing cells without increased number.
Option C (metaplasia) involves cell type transformation, not relevant here. Option D
(dysplasia) is pre-neoplastic with disordered architecture and cytologic atypia, not
adaptive hyperplasia. [100% VERIFIED – Rasmussen NUR2063 FINAL]
, Q4: A 55-year-old male with chronic gastroesophageal reflux disease undergoes
endoscopy showing columnar epithelium with goblet cells replacing normal squamous
epithelium in the distal esophagus. Which cellular adaptation and clinical significance
are present?
A. Dysplasia with pre-malignant potential requiring immediate resection
B. Metaplasia with reversible cell type change and increased adenocarcinoma risk
C. Hyperplasia with increased squamous cell number and protective adaptation
D. Hypertrophy with enlarged squamous cells and enhanced barrier function
B. Metaplasia with reversible cell type change and increased adenocarcinoma risk
[CORRECT]
Correct Answer: B
Rationale: Metaplasia is the reversible replacement of one differentiated cell type with
another better suited to withstand chronic stress. In Barrett's esophagus, chronic
acid/bile reflux causes squamous-to-columnar metaplasia with intestinal-type goblet
cells. While adaptive, this metaplasia increases risk of esophageal adenocarcinoma
through the dysplasia-carcinoma sequence, requiring surveillance. Option A (dysplasia)
would show cytologic atypia and architectural distortion, not yet present here. Option
C/D describe incorrect cell types and mechanisms—squamous hyperplasia/hypertrophy
do not occur in this setting. [100% VERIFIED – Rasmussen NUR2063 FINAL]
