NR283 Final Exam & Unit 1 2 3 Test Bank
- Chamberlain University
Pathophysiology Questions And Well
Graded Solutions With Rationales
Updated 2026-2027
Master your nursing curriculum with this complete study resource for Chamberlain University NR283
Pathophysiology. Features premium, high-yield practice questions and detailed rationales covering
Exam 1, Exam 2, Exam 3, and the Comprehensive Final Exam. Perfect for reviewing cellular dynamics,
fluid/electrolyte imbalances, acid-base ABG interpretation, renal failure, and endocrine disorders. Clear,
scannable explanations ensure you understand critical concepts to boost your exam scores.
📌 Unit 1: Cellular Dynamics, Genetics, and Immunity
(Questions 1–25)
1. A patient with long-standing, untreated hypertension undergoes an echocardiogram.
The results reveal significant thickening of the left ventricular wall. Which cellular
adaptation has occurred?
A) Hyperplasia
B) Metaplasia
C) Hypertrophy
D) Dysplasia
Rationale: Hypertrophy is an increase in the size of individual cells, often caused by
an increased mechanical workload or stress, such as the heart pumping against high
systemic vascular resistance.
2. A tissue biopsy of a chronic smoker's bronchi reveals that normal ciliated columnar
epithelial cells have been replaced by stratified squamous epithelial cells. This is an
example of which process?
A) Anaplasia
B) Metaplasia
C) Dysplasia
D) Atrophy
Rationale: Metaplasia is the reversible replacement of one mature cell type by
another mature cell type, usually as an adaptive response to chronic irritation or
injury.
3. During an ischemic event, a lack of oxygen leads to a decrease in cellular ATP
production. Which immediate consequence occurs within the cell?
A) Shrinkage of the nucleus
B) Failure of the sodium-potassium pump, leading to cellular swelling
C) Decreased intracellular calcium levels
D) Increased intracellular pH
Rationale: Decreased ATP causes the Na+/K+ ATPase pump to fail. Sodium
1|Page
, accumulates inside the cell, pulling water in by osmosis, which results in acute
cellular swelling.
4. A patient has been diagnosed with a condition that triggers premature, programmed
cellular suicide in specific healthy tissues. What is the medical term for this
programmed cell death?
A) Liquefactive necrosis
B) Coagulative necrosis
C) Apoptosis
D) Infarction
Rationale: Apoptosis is a highly regulated, distinct process of programmed cell death
designed to eliminate unwanted or damaged cells without triggering inflammation.
5. A child is diagnosed with Cystic Fibrosis. Both parents are asymptomatic carriers of
the disease. What is the pattern of genetic inheritance for this condition?
A) Autosomal dominant
B) Autosomal recessive
C) X-linked dominant
D) X-linked recessive
Rationale: Cystic Fibrosis is an autosomal recessive disorder, meaning an individual
must inherit two copies of the mutated gene (one from each parent) to manifest the
disease.
6. A genetic screening reveals that a fetus has a chromosomal makeup of 47, XY, +21.
Which clinical condition will this child have at birth?
A) Turner syndrome
B) Klinefelter syndrome
C) Down syndrome
D) Marfan syndrome
Rationale: Down syndrome is caused by Trisomy 21, which is the presence of a third
copy of chromosome 21, resulting in a total of 47 chromosomes.
7. A female patient presents with short stature, a webbed neck, and a lack of
secondary sexual characteristics. A karyotype reveals a 45, XO chromosome
configuration. Which condition is present?
A) Turner syndrome
B) Klinefelter syndrome
C) Huntington's disease
D) Fragile X syndrome
Rationale: Turner syndrome is a chromosomal condition in females characterized by
complete or partial absence of one of the X chromosomes (45, XO).
8. An adult patient is diagnosed with a progressive, neurodegenerative genetic disorder
characterized by chorea and cognitive decline. The condition is inherited in an
autosomal dominant pattern. Which disorder matches this description?
A) Phenylketonuria
B) Cystic fibrosis
C) Huntington's disease
D) Tay-Sachs disease
Rationale: Huntington's disease is an autosomal dominant neurodegenerative
disorder that typically manifests in adulthood with involuntary movements (chorea)
and cognitive decline.
9. During the vascular stage of acute inflammation, which physiological change directly
accounts for the localized warmth and redness (erythema) at the site of injury?
A) Localized vasoconstriction
2|Page
, B) Vasodilation and increased blood flow
C) Decreased capillary permeability
D) Increased systemic blood pressure
Rationale: Chemical mediators like histamine trigger rapid local vasodilation,
increasing blood flow to the injured area, which causes redness and warmth.
10. A nurse assesses a localized area of inflammation and notes a high accumulation of
neutrophils and dead cellular debris, forming thick, yellow-green purulent exudate.
This exudate is commonly referred to as what?
A) Serous fluid
B) Fibrinous exudate
C) Pus
D) Hemorrhagic fluid
Rationale: Purulent exudate (pus) consists of live and dead white blood cells
(primarily neutrophils), cellular debris, and liquefied digested tissue.
11. Which white blood cell type acts as the primary "first responder" to acute tissue injury
or bacterial invasion, arriving at the scene within hours?
A) Macrophage
B) Neutrophil
C) Lymphocyte
D) Monocyte
Rationale: Neutrophils are the most abundant leukocytes in acute inflammation and
are the first cells to migrate out of blood vessels into injured tissue.
12. A patient is exposed to an allergen, causing immediate degranulation of mast cells
and a massive release of histamine. Which type of hypersensitivity reaction is
occurring?
A) Type I (Anaphylactic)
B) Type II (Cytotoxic)
C) Type III (Immune complex)
D) Type IV (Delayed-type)
Rationale: Type I hypersensitivity reactions are IgE-mediated responses that trigger
mast cell degranulation and histamine release immediately upon exposure to an
antigen.
13. A patient receives a mismatched blood transfusion, resulting in the destruction of the
donor red blood cells by the recipient's antibodies via complement activation. Which
type of hypersensitivity reaction does this represent?
A) Type I
B) Type II
C) Type III
D) Type IV
Rationale: Type II hypersensitivity reactions are tissue-specific or cytotoxic reactions,
where antibodies (IgG or IgM) bind to antigens on cell surfaces, leading to cell
destruction.
14. A patient develops a raised, itchy red rash 48 hours after making contact with poison
ivy while gardening. Which mechanism explains this delayed response?
A) IgE-mediated mast cell degranulation
B) Deposition of antigen-antibody complexes in tissues
C) T-lymphocyte-mediated cellular response
D) Complement-mediated cell lysis
Rationale: Poison ivy triggers a Type IV hypersensitivity reaction, which is a delayed,
cell-mediated immune response driven by T cells rather than antibodies.
3|Page
, 15. An infant is born with a congenital absence of the thymus gland, leading to a
profound deficiency in mature T lymphocytes. Which type of immunity is primarily
impaired?
A) Humoral immunity
B) Cell-mediated immunity
C) Innate immunity
D) Passive immunity
Rationale: The thymus is the primary site for T-lymphocyte maturation. A lack of T
cells directly cripples cell-mediated immunity.
16. Which immunoglobulin class is the most abundant in systemic circulation, crosses
the placenta to provide passive immunity to the fetus, and dominates the secondary
immune response?
A) IgA
B) IgM
C) IgG
D) IgE
Rationale: IgG is the most prevalent antibody in the blood and is uniquely capable of
crossing the placenta to protect the developing fetus.
17. A nurse checks a patient’s lab work and notices a sharp rise in IgE antibodies. Which
clinical scenario is most consistent with this finding?
A) An acute systemic bacterial infection
B) An allergic reaction or parasitic infestation
C) Recovery from a recent viral infection
D) A chronic autoimmune disease flare-up
Rationale: IgE antibodies bind to mast cells and basophils, playing a central role in
allergic conditions and defense against parasites.
18. What is the fundamental pathophysiological mechanism behind all autoimmune
diseases?
A) Complete failure of the innate immune response
B) Overproduction of neutrophils during acute infections
C) A loss of self-tolerance, leading the immune system to attack host tissues
D) Severe depletion of CD4+ T-helper cells
Rationale: Autoimmunity occurs when the immune system loses its ability to
distinguish between "self" antigens and "foreign" antigens, launching an attack on
host tissues.
19. A patient is diagnosed with systemic lupus erythematosus (SLE). The core damage
in this disease results from the widespread deposition of antigen-antibody complexes
in basement membranes, particularly in the kidneys and joints. This represents
which hypersensitivity type?
A) Type I
B) Type II
C) Type III
D) Type IV
Rationale: Type III hypersensitivity involves the formation of circulating antigen-
antibody immune complexes that deposit in tissues, activating complement and
causing widespread inflammation.
20. A patient with human immunodeficiency virus (HIV) is diagnosed with an
opportunistic infection, and their CD4+ T-cell count drops below 200 cells/uL. How is
the patient's condition now classified?
A) Acute retroviral syndrome
4|Page
- Chamberlain University
Pathophysiology Questions And Well
Graded Solutions With Rationales
Updated 2026-2027
Master your nursing curriculum with this complete study resource for Chamberlain University NR283
Pathophysiology. Features premium, high-yield practice questions and detailed rationales covering
Exam 1, Exam 2, Exam 3, and the Comprehensive Final Exam. Perfect for reviewing cellular dynamics,
fluid/electrolyte imbalances, acid-base ABG interpretation, renal failure, and endocrine disorders. Clear,
scannable explanations ensure you understand critical concepts to boost your exam scores.
📌 Unit 1: Cellular Dynamics, Genetics, and Immunity
(Questions 1–25)
1. A patient with long-standing, untreated hypertension undergoes an echocardiogram.
The results reveal significant thickening of the left ventricular wall. Which cellular
adaptation has occurred?
A) Hyperplasia
B) Metaplasia
C) Hypertrophy
D) Dysplasia
Rationale: Hypertrophy is an increase in the size of individual cells, often caused by
an increased mechanical workload or stress, such as the heart pumping against high
systemic vascular resistance.
2. A tissue biopsy of a chronic smoker's bronchi reveals that normal ciliated columnar
epithelial cells have been replaced by stratified squamous epithelial cells. This is an
example of which process?
A) Anaplasia
B) Metaplasia
C) Dysplasia
D) Atrophy
Rationale: Metaplasia is the reversible replacement of one mature cell type by
another mature cell type, usually as an adaptive response to chronic irritation or
injury.
3. During an ischemic event, a lack of oxygen leads to a decrease in cellular ATP
production. Which immediate consequence occurs within the cell?
A) Shrinkage of the nucleus
B) Failure of the sodium-potassium pump, leading to cellular swelling
C) Decreased intracellular calcium levels
D) Increased intracellular pH
Rationale: Decreased ATP causes the Na+/K+ ATPase pump to fail. Sodium
1|Page
, accumulates inside the cell, pulling water in by osmosis, which results in acute
cellular swelling.
4. A patient has been diagnosed with a condition that triggers premature, programmed
cellular suicide in specific healthy tissues. What is the medical term for this
programmed cell death?
A) Liquefactive necrosis
B) Coagulative necrosis
C) Apoptosis
D) Infarction
Rationale: Apoptosis is a highly regulated, distinct process of programmed cell death
designed to eliminate unwanted or damaged cells without triggering inflammation.
5. A child is diagnosed with Cystic Fibrosis. Both parents are asymptomatic carriers of
the disease. What is the pattern of genetic inheritance for this condition?
A) Autosomal dominant
B) Autosomal recessive
C) X-linked dominant
D) X-linked recessive
Rationale: Cystic Fibrosis is an autosomal recessive disorder, meaning an individual
must inherit two copies of the mutated gene (one from each parent) to manifest the
disease.
6. A genetic screening reveals that a fetus has a chromosomal makeup of 47, XY, +21.
Which clinical condition will this child have at birth?
A) Turner syndrome
B) Klinefelter syndrome
C) Down syndrome
D) Marfan syndrome
Rationale: Down syndrome is caused by Trisomy 21, which is the presence of a third
copy of chromosome 21, resulting in a total of 47 chromosomes.
7. A female patient presents with short stature, a webbed neck, and a lack of
secondary sexual characteristics. A karyotype reveals a 45, XO chromosome
configuration. Which condition is present?
A) Turner syndrome
B) Klinefelter syndrome
C) Huntington's disease
D) Fragile X syndrome
Rationale: Turner syndrome is a chromosomal condition in females characterized by
complete or partial absence of one of the X chromosomes (45, XO).
8. An adult patient is diagnosed with a progressive, neurodegenerative genetic disorder
characterized by chorea and cognitive decline. The condition is inherited in an
autosomal dominant pattern. Which disorder matches this description?
A) Phenylketonuria
B) Cystic fibrosis
C) Huntington's disease
D) Tay-Sachs disease
Rationale: Huntington's disease is an autosomal dominant neurodegenerative
disorder that typically manifests in adulthood with involuntary movements (chorea)
and cognitive decline.
9. During the vascular stage of acute inflammation, which physiological change directly
accounts for the localized warmth and redness (erythema) at the site of injury?
A) Localized vasoconstriction
2|Page
, B) Vasodilation and increased blood flow
C) Decreased capillary permeability
D) Increased systemic blood pressure
Rationale: Chemical mediators like histamine trigger rapid local vasodilation,
increasing blood flow to the injured area, which causes redness and warmth.
10. A nurse assesses a localized area of inflammation and notes a high accumulation of
neutrophils and dead cellular debris, forming thick, yellow-green purulent exudate.
This exudate is commonly referred to as what?
A) Serous fluid
B) Fibrinous exudate
C) Pus
D) Hemorrhagic fluid
Rationale: Purulent exudate (pus) consists of live and dead white blood cells
(primarily neutrophils), cellular debris, and liquefied digested tissue.
11. Which white blood cell type acts as the primary "first responder" to acute tissue injury
or bacterial invasion, arriving at the scene within hours?
A) Macrophage
B) Neutrophil
C) Lymphocyte
D) Monocyte
Rationale: Neutrophils are the most abundant leukocytes in acute inflammation and
are the first cells to migrate out of blood vessels into injured tissue.
12. A patient is exposed to an allergen, causing immediate degranulation of mast cells
and a massive release of histamine. Which type of hypersensitivity reaction is
occurring?
A) Type I (Anaphylactic)
B) Type II (Cytotoxic)
C) Type III (Immune complex)
D) Type IV (Delayed-type)
Rationale: Type I hypersensitivity reactions are IgE-mediated responses that trigger
mast cell degranulation and histamine release immediately upon exposure to an
antigen.
13. A patient receives a mismatched blood transfusion, resulting in the destruction of the
donor red blood cells by the recipient's antibodies via complement activation. Which
type of hypersensitivity reaction does this represent?
A) Type I
B) Type II
C) Type III
D) Type IV
Rationale: Type II hypersensitivity reactions are tissue-specific or cytotoxic reactions,
where antibodies (IgG or IgM) bind to antigens on cell surfaces, leading to cell
destruction.
14. A patient develops a raised, itchy red rash 48 hours after making contact with poison
ivy while gardening. Which mechanism explains this delayed response?
A) IgE-mediated mast cell degranulation
B) Deposition of antigen-antibody complexes in tissues
C) T-lymphocyte-mediated cellular response
D) Complement-mediated cell lysis
Rationale: Poison ivy triggers a Type IV hypersensitivity reaction, which is a delayed,
cell-mediated immune response driven by T cells rather than antibodies.
3|Page
, 15. An infant is born with a congenital absence of the thymus gland, leading to a
profound deficiency in mature T lymphocytes. Which type of immunity is primarily
impaired?
A) Humoral immunity
B) Cell-mediated immunity
C) Innate immunity
D) Passive immunity
Rationale: The thymus is the primary site for T-lymphocyte maturation. A lack of T
cells directly cripples cell-mediated immunity.
16. Which immunoglobulin class is the most abundant in systemic circulation, crosses
the placenta to provide passive immunity to the fetus, and dominates the secondary
immune response?
A) IgA
B) IgM
C) IgG
D) IgE
Rationale: IgG is the most prevalent antibody in the blood and is uniquely capable of
crossing the placenta to protect the developing fetus.
17. A nurse checks a patient’s lab work and notices a sharp rise in IgE antibodies. Which
clinical scenario is most consistent with this finding?
A) An acute systemic bacterial infection
B) An allergic reaction or parasitic infestation
C) Recovery from a recent viral infection
D) A chronic autoimmune disease flare-up
Rationale: IgE antibodies bind to mast cells and basophils, playing a central role in
allergic conditions and defense against parasites.
18. What is the fundamental pathophysiological mechanism behind all autoimmune
diseases?
A) Complete failure of the innate immune response
B) Overproduction of neutrophils during acute infections
C) A loss of self-tolerance, leading the immune system to attack host tissues
D) Severe depletion of CD4+ T-helper cells
Rationale: Autoimmunity occurs when the immune system loses its ability to
distinguish between "self" antigens and "foreign" antigens, launching an attack on
host tissues.
19. A patient is diagnosed with systemic lupus erythematosus (SLE). The core damage
in this disease results from the widespread deposition of antigen-antibody complexes
in basement membranes, particularly in the kidneys and joints. This represents
which hypersensitivity type?
A) Type I
B) Type II
C) Type III
D) Type IV
Rationale: Type III hypersensitivity involves the formation of circulating antigen-
antibody immune complexes that deposit in tissues, activating complement and
causing widespread inflammation.
20. A patient with human immunodeficiency virus (HIV) is diagnosed with an
opportunistic infection, and their CD4+ T-cell count drops below 200 cells/uL. How is
the patient's condition now classified?
A) Acute retroviral syndrome
4|Page
