NURS 6501 FINAL EXAM WEEK 11 2026/2027 | Advanced
Pathophysiology | LATEST UPDATE | Scored 100% | Verified
Answers | Pass Guaranteed - A+ Graded
Cellular Adaptation, Injury, Inflammation & Immunity
Q1: A 58-year-old male with a history of heavy alcohol use presents with liver
enlargement on physical exam. The liver biopsy shows enlarged hepatocytes with
increased cytoplasmic volume. This cellular adaptation is best described as:
A. Hyperplasia with increased cell number
B. Hypertrophy with increased cell size [CORRECT]
C. Atrophy with decreased cell size
D. Metaplasia with change to different cell type
Correct Answer: B
Rationale: Hypertrophy refers to increased cell size (not number) in response to
increased workload or stimulation. Alcoholic hepatomegaly results from cellular
swelling and fat accumulation, increasing hepatocyte size. Hyperplasia (option A)
involves increased cell number. Atrophy (option C) is size reduction. Metaplasia (option
D) involves cell type conversion.
Q2: A patient with chronic gastroesophageal reflux disease develops columnar
epithelium with goblet cells in the distal esophagus. This change represents:
A. Dysplasia with abnormal cell maturation
B. Metaplasia with replacement by a different adult cell type [CORRECT]
C. Hyperplasia with increased cell proliferation
D. Anaplasia with loss of cell differentiation
Correct Answer: B
,Rationale: Barrett's esophagus demonstrates metaplasia—replacement of normal
squamous epithelium by intestinal-type columnar epithelium as an adaptive response to
chronic acid exposure. This is reversible but increases adenocarcinoma risk. Dysplasia
(option A) involves abnormal maturation. Anaplasia (option D) indicates malignant
transformation with loss of differentiation.
Q3: A patient with myocardial infarction shows coagulative necrosis on biopsy. The
characteristic feature is:
A. Liquefactive necrosis with enzymatic digestion forming abscess
B. Preservation of tissue architecture with ghost outlines of dead cells [CORRECT]
C. Caseous necrosis with cheese-like appearance
D. Fat necrosis with calcium soap formation
Correct Answer: B
Rationale: Coagulative necrosis (typical of ischemia in solid organs except brain)
preserves tissue architecture for days due to denatured proteins inhibiting enzymatic
digestion. Ghost cell outlines remain visible. Liquefactive necrosis (option A) occurs in
brain and abscesses. Caseous necrosis (option C) is seen in tuberculosis. Fat necrosis
(option D) occurs in pancreatic injury and breast tissue.
Q4: A patient presents with fever, elevated white blood cell count, and increased
C-reactive protein after surgery. These findings represent:
A. Specific humoral immunity with antibody production
B. Systemic manifestations of acute inflammation [CORRECT]
C. Chronic inflammation with granuloma formation
D. Cell-mediated immunity with cytotoxic T-cells
Correct Answer: B
Rationale: Fever, leukocytosis, and acute phase reactants (CRP, fibrinogen) are systemic
features of acute inflammation mediated by IL-1, IL-6, and TNF-alpha from
,macrophages. This non-specific response occurs with tissue injury, infection, or trauma.
Options A and D describe specific adaptive immunity. Option C describes chronic
inflammation features.
Q5: A patient with seasonal allergies experiences immediate sneezing, itching, and
rhinorrhea after pollen exposure. This reaction is classified as:
A. Type II hypersensitivity with antibody-mediated cytotoxicity
B. Type I hypersensitivity with IgE-mediated mast cell degranulation [CORRECT]
C. Type III hypersensitivity with immune complex deposition
D. Type IV hypersensitivity with delayed T-cell response
Correct Answer: B
Rationale: Type I hypersensitivity involves IgE binding to FcεRI receptors on mast cells
and basophils, triggering immediate degranulation with histamine, leukotrienes, and
prostaglandins release. This causes allergic rhinitis, asthma, and anaphylaxis. Type II
(option A) involves cytotoxic antibodies. Type III (option C) involves immune complexes.
Type IV (option D) is T-cell mediated and delayed.
Q6: A patient with systemic lupus erythematosus has autoantibodies against
double-stranded DNA forming immune complexes in glomeruli. This represents:
A. Type I hypersensitivity reaction
B. Type II hypersensitivity with direct cellular damage
C. Type III hypersensitivity with immune complex deposition [CORRECT]
D. Type IV hypersensitivity with granuloma formation
Correct Answer: C
Rationale: SLE nephritis demonstrates Type III hypersensitivity—circulating immune
complexes (anti-dsDNA antibodies with antigen) deposit in glomerular basement
membrane, activating complement and causing inflammation. This mechanism also
, causes serum sickness and Arthus reaction. Options A, B, and D describe other
hypersensitivity types.
Q7: A patient with tuberculosis shows granulomas with caseous necrosis on lung
biopsy. The central cell type in these granulomas is:
A. Neutrophils with multi-lobed nuclei
B. Activated macrophages (epithelioid histiocytes) and multinucleated giant cells
[CORRECT]
C. Eosinophils with bilobed nuclei and red granules
D. Mast cells with basophilic granules
Correct Answer: B
Rationale: Granulomatous inflammation in TB features activated macrophages
(epithelioid cells) that fuse to form Langhans giant cells, surrounded by lymphocytes.
This cell-mediated (Type IV) response attempts to contain intracellular mycobacteria.
Neutrophils (option A) dominate acute inflammation. Eosinophils (option C) indicate
allergy/parasites. Mast cells (option D) mediate immediate hypersensitivity.
Q8: A patient with HIV has CD4+ T-cell count of 180 cells/μL (normal 500-1400). This
immunodeficiency primarily impairs:
A. B-cell antibody production in germinal centers
B. Cell-mediated immunity and helper T-cell function [CORRECT]
C. Innate immunity with neutrophil dysfunction
D. Complement system activation
Correct Answer: B
Rationale: HIV infects CD4+ helper T-cells, causing progressive depletion and defective
cell-mediated immunity. This explains susceptibility to opportunistic infections (PJP,
toxoplasmosis, MAC, CMV) and malignancies (Kaposi sarcoma, lymphoma). Humoral
Pathophysiology | LATEST UPDATE | Scored 100% | Verified
Answers | Pass Guaranteed - A+ Graded
Cellular Adaptation, Injury, Inflammation & Immunity
Q1: A 58-year-old male with a history of heavy alcohol use presents with liver
enlargement on physical exam. The liver biopsy shows enlarged hepatocytes with
increased cytoplasmic volume. This cellular adaptation is best described as:
A. Hyperplasia with increased cell number
B. Hypertrophy with increased cell size [CORRECT]
C. Atrophy with decreased cell size
D. Metaplasia with change to different cell type
Correct Answer: B
Rationale: Hypertrophy refers to increased cell size (not number) in response to
increased workload or stimulation. Alcoholic hepatomegaly results from cellular
swelling and fat accumulation, increasing hepatocyte size. Hyperplasia (option A)
involves increased cell number. Atrophy (option C) is size reduction. Metaplasia (option
D) involves cell type conversion.
Q2: A patient with chronic gastroesophageal reflux disease develops columnar
epithelium with goblet cells in the distal esophagus. This change represents:
A. Dysplasia with abnormal cell maturation
B. Metaplasia with replacement by a different adult cell type [CORRECT]
C. Hyperplasia with increased cell proliferation
D. Anaplasia with loss of cell differentiation
Correct Answer: B
,Rationale: Barrett's esophagus demonstrates metaplasia—replacement of normal
squamous epithelium by intestinal-type columnar epithelium as an adaptive response to
chronic acid exposure. This is reversible but increases adenocarcinoma risk. Dysplasia
(option A) involves abnormal maturation. Anaplasia (option D) indicates malignant
transformation with loss of differentiation.
Q3: A patient with myocardial infarction shows coagulative necrosis on biopsy. The
characteristic feature is:
A. Liquefactive necrosis with enzymatic digestion forming abscess
B. Preservation of tissue architecture with ghost outlines of dead cells [CORRECT]
C. Caseous necrosis with cheese-like appearance
D. Fat necrosis with calcium soap formation
Correct Answer: B
Rationale: Coagulative necrosis (typical of ischemia in solid organs except brain)
preserves tissue architecture for days due to denatured proteins inhibiting enzymatic
digestion. Ghost cell outlines remain visible. Liquefactive necrosis (option A) occurs in
brain and abscesses. Caseous necrosis (option C) is seen in tuberculosis. Fat necrosis
(option D) occurs in pancreatic injury and breast tissue.
Q4: A patient presents with fever, elevated white blood cell count, and increased
C-reactive protein after surgery. These findings represent:
A. Specific humoral immunity with antibody production
B. Systemic manifestations of acute inflammation [CORRECT]
C. Chronic inflammation with granuloma formation
D. Cell-mediated immunity with cytotoxic T-cells
Correct Answer: B
Rationale: Fever, leukocytosis, and acute phase reactants (CRP, fibrinogen) are systemic
features of acute inflammation mediated by IL-1, IL-6, and TNF-alpha from
,macrophages. This non-specific response occurs with tissue injury, infection, or trauma.
Options A and D describe specific adaptive immunity. Option C describes chronic
inflammation features.
Q5: A patient with seasonal allergies experiences immediate sneezing, itching, and
rhinorrhea after pollen exposure. This reaction is classified as:
A. Type II hypersensitivity with antibody-mediated cytotoxicity
B. Type I hypersensitivity with IgE-mediated mast cell degranulation [CORRECT]
C. Type III hypersensitivity with immune complex deposition
D. Type IV hypersensitivity with delayed T-cell response
Correct Answer: B
Rationale: Type I hypersensitivity involves IgE binding to FcεRI receptors on mast cells
and basophils, triggering immediate degranulation with histamine, leukotrienes, and
prostaglandins release. This causes allergic rhinitis, asthma, and anaphylaxis. Type II
(option A) involves cytotoxic antibodies. Type III (option C) involves immune complexes.
Type IV (option D) is T-cell mediated and delayed.
Q6: A patient with systemic lupus erythematosus has autoantibodies against
double-stranded DNA forming immune complexes in glomeruli. This represents:
A. Type I hypersensitivity reaction
B. Type II hypersensitivity with direct cellular damage
C. Type III hypersensitivity with immune complex deposition [CORRECT]
D. Type IV hypersensitivity with granuloma formation
Correct Answer: C
Rationale: SLE nephritis demonstrates Type III hypersensitivity—circulating immune
complexes (anti-dsDNA antibodies with antigen) deposit in glomerular basement
membrane, activating complement and causing inflammation. This mechanism also
, causes serum sickness and Arthus reaction. Options A, B, and D describe other
hypersensitivity types.
Q7: A patient with tuberculosis shows granulomas with caseous necrosis on lung
biopsy. The central cell type in these granulomas is:
A. Neutrophils with multi-lobed nuclei
B. Activated macrophages (epithelioid histiocytes) and multinucleated giant cells
[CORRECT]
C. Eosinophils with bilobed nuclei and red granules
D. Mast cells with basophilic granules
Correct Answer: B
Rationale: Granulomatous inflammation in TB features activated macrophages
(epithelioid cells) that fuse to form Langhans giant cells, surrounded by lymphocytes.
This cell-mediated (Type IV) response attempts to contain intracellular mycobacteria.
Neutrophils (option A) dominate acute inflammation. Eosinophils (option C) indicate
allergy/parasites. Mast cells (option D) mediate immediate hypersensitivity.
Q8: A patient with HIV has CD4+ T-cell count of 180 cells/μL (normal 500-1400). This
immunodeficiency primarily impairs:
A. B-cell antibody production in germinal centers
B. Cell-mediated immunity and helper T-cell function [CORRECT]
C. Innate immunity with neutrophil dysfunction
D. Complement system activation
Correct Answer: B
Rationale: HIV infects CD4+ helper T-cells, causing progressive depletion and defective
cell-mediated immunity. This explains susceptibility to opportunistic infections (PJP,
toxoplasmosis, MAC, CMV) and malignancies (Kaposi sarcoma, lymphoma). Humoral
