PATHO NR 283 EXAM 1 2026/2027 LATEST UPDATE |
Complete Solution Graded A+ | Chamberlain College of
Nursing Pathophysiology Prep | Pass Guaranteed
Unit 1: Cellular Function & Adaptation (20 Questions)
Q1: A 45-year-old male presents with a persistent cough and hemoptysis. CT scan
reveals a 3 cm mass in the right lung. Biopsy shows cells with hyperchromatic nuclei,
high nuclear-to-cytoplasmic ratio, and numerous mitotic figures. The cells appear to
have lost their normal tissue architecture. Which cellular adaptation or process is most
likely occurring?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Neoplasia [CORRECT]
Correct Answer: D
Rationale: The findings describe neoplasia (uncontrolled, abnormal cell growth). Key
indicators include: loss of normal tissue architecture, hyperchromatic nuclei (increased
DNA content), high nuclear-to-cytoplasmic ratio (immature appearance), and numerous
,mitotic figures (rapid proliferation). These are hallmark features of malignant
transformation. Hypertrophy (Option A) involves increased cell size, not number or
atypical features. Hyperplasia (Option B) involves increased cell number but maintains
normal architecture and cellular characteristics. Metaplasia (Option C) involves
replacement of one mature cell type with another mature cell type (e.g., squamous
metaplasia in smokers), not the atypical features described here. This tests
understanding of cellular adaptation versus neoplastic transformation.
Q2: A 62-year-old female with a history of hypertension has left ventricular hypertrophy
confirmed by echocardiography. The cardiologist explains that the heart muscle has
increased in size to compensate for increased afterload. Which cellular process
explains this adaptation?
A. Hyperplasia of cardiac myocytes
B. Hypertrophy of existing cardiac myocytes [CORRECT]
C. Metaplasia of cardiac cells
D. Dysplasia of myocardial tissue
Correct Answer: B
Rationale: Cardiac muscle cells (myocytes) are permanent cells that cannot undergo
hyperplasia (cell division). Left ventricular hypertrophy in response to chronic pressure
overload (hypertension) occurs through hypertrophy—increased size of existing cells.
,This involves increased protein synthesis, more myofilaments, and larger cell volume.
Hyperplasia (Option A) is incorrect because adult cardiac myocytes cannot divide.
Metaplasia (Option C) involves cell type conversion, not relevant here. Dysplasia (Option
D) refers to abnormal cellular development and is pre-neoplastic, not a compensatory
adaptation. This tests understanding that hypertrophy occurs in permanent cells
(cardiac muscle, skeletal muscle, neurons), while hyperplasia occurs in labile or stable
cells.
Q3: A 28-year-old female presents with a neck mass. Fine needle aspiration reveals
thyroid follicular cells that have undergone transformation to squamous epithelium. She
has a history of chronic vitamin A deficiency. Which cellular adaptation is described?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia [CORRECT]
D. Anaplasia
Correct Answer: C
Rationale: Metaplasia is the reversible replacement of one differentiated cell type with
another mature cell type. Vitamin A deficiency can cause squamous metaplasia in
various epithelia, including thyroid (though more commonly seen in respiratory and
ocular epithelia). This represents an adaptive response to chronic irritation or
, deficiency. Hypertrophy (Option A) involves increased cell size. Hyperplasia (Option B)
involves increased cell number of the same type. Anaplasia (Option D) is a feature of
malignancy with loss of cellular differentiation, not a reversible adaptation. This tests
recognition of metaplasia as a protective but potentially pre-neoplastic change.
Q4: A 55-year-old male alcoholic presents with hepatic dysfunction. Liver biopsy shows
hepatocytes with clear vacuoles that displace the nucleus to the periphery. Which
cellular adaptation or injury is demonstrated?
A. Hydropic change (cellular swelling)
B. Fatty change (steatosis) [CORRECT]
C. Hyaline change
D. Pigment accumulation
Correct Answer: B
Rationale: Fatty change (steatosis) is characterized by accumulation of triglycerides
within hepatocytes, appearing as clear vacuoles that displace the nucleus to the
periphery (signet ring appearance). Alcohol metabolism increases NADH, promoting
fatty acid synthesis and inhibiting beta-oxidation. Hydropic change (Option A) involves
water accumulation causing cellular swelling with pale cytoplasm but doesn't typically
show discrete vacuoles displacing the nucleus. Hyaline change (Option C) refers to
glassy, eosinophilic deposits (e.g., Mallory bodies in alcoholics). Pigment accumulation
Complete Solution Graded A+ | Chamberlain College of
Nursing Pathophysiology Prep | Pass Guaranteed
Unit 1: Cellular Function & Adaptation (20 Questions)
Q1: A 45-year-old male presents with a persistent cough and hemoptysis. CT scan
reveals a 3 cm mass in the right lung. Biopsy shows cells with hyperchromatic nuclei,
high nuclear-to-cytoplasmic ratio, and numerous mitotic figures. The cells appear to
have lost their normal tissue architecture. Which cellular adaptation or process is most
likely occurring?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Neoplasia [CORRECT]
Correct Answer: D
Rationale: The findings describe neoplasia (uncontrolled, abnormal cell growth). Key
indicators include: loss of normal tissue architecture, hyperchromatic nuclei (increased
DNA content), high nuclear-to-cytoplasmic ratio (immature appearance), and numerous
,mitotic figures (rapid proliferation). These are hallmark features of malignant
transformation. Hypertrophy (Option A) involves increased cell size, not number or
atypical features. Hyperplasia (Option B) involves increased cell number but maintains
normal architecture and cellular characteristics. Metaplasia (Option C) involves
replacement of one mature cell type with another mature cell type (e.g., squamous
metaplasia in smokers), not the atypical features described here. This tests
understanding of cellular adaptation versus neoplastic transformation.
Q2: A 62-year-old female with a history of hypertension has left ventricular hypertrophy
confirmed by echocardiography. The cardiologist explains that the heart muscle has
increased in size to compensate for increased afterload. Which cellular process
explains this adaptation?
A. Hyperplasia of cardiac myocytes
B. Hypertrophy of existing cardiac myocytes [CORRECT]
C. Metaplasia of cardiac cells
D. Dysplasia of myocardial tissue
Correct Answer: B
Rationale: Cardiac muscle cells (myocytes) are permanent cells that cannot undergo
hyperplasia (cell division). Left ventricular hypertrophy in response to chronic pressure
overload (hypertension) occurs through hypertrophy—increased size of existing cells.
,This involves increased protein synthesis, more myofilaments, and larger cell volume.
Hyperplasia (Option A) is incorrect because adult cardiac myocytes cannot divide.
Metaplasia (Option C) involves cell type conversion, not relevant here. Dysplasia (Option
D) refers to abnormal cellular development and is pre-neoplastic, not a compensatory
adaptation. This tests understanding that hypertrophy occurs in permanent cells
(cardiac muscle, skeletal muscle, neurons), while hyperplasia occurs in labile or stable
cells.
Q3: A 28-year-old female presents with a neck mass. Fine needle aspiration reveals
thyroid follicular cells that have undergone transformation to squamous epithelium. She
has a history of chronic vitamin A deficiency. Which cellular adaptation is described?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia [CORRECT]
D. Anaplasia
Correct Answer: C
Rationale: Metaplasia is the reversible replacement of one differentiated cell type with
another mature cell type. Vitamin A deficiency can cause squamous metaplasia in
various epithelia, including thyroid (though more commonly seen in respiratory and
ocular epithelia). This represents an adaptive response to chronic irritation or
, deficiency. Hypertrophy (Option A) involves increased cell size. Hyperplasia (Option B)
involves increased cell number of the same type. Anaplasia (Option D) is a feature of
malignancy with loss of cellular differentiation, not a reversible adaptation. This tests
recognition of metaplasia as a protective but potentially pre-neoplastic change.
Q4: A 55-year-old male alcoholic presents with hepatic dysfunction. Liver biopsy shows
hepatocytes with clear vacuoles that displace the nucleus to the periphery. Which
cellular adaptation or injury is demonstrated?
A. Hydropic change (cellular swelling)
B. Fatty change (steatosis) [CORRECT]
C. Hyaline change
D. Pigment accumulation
Correct Answer: B
Rationale: Fatty change (steatosis) is characterized by accumulation of triglycerides
within hepatocytes, appearing as clear vacuoles that displace the nucleus to the
periphery (signet ring appearance). Alcohol metabolism increases NADH, promoting
fatty acid synthesis and inhibiting beta-oxidation. Hydropic change (Option A) involves
water accumulation causing cellular swelling with pale cytoplasm but doesn't typically
show discrete vacuoles displacing the nucleus. Hyaline change (Option C) refers to
glassy, eosinophilic deposits (e.g., Mallory bodies in alcoholics). Pigment accumulation
