SECTION 1: FUNDAMENTAL CONCEPTS – PATHOPHYSIOLOGY,
PATHOLOGY, AND CELLULAR ADAPTATION (Questions 1–20)
1. The study of the underlying changes in body physiology (molecular, cellular,
and organ systems) that result from disease or injury is defined as:
A) Pathology
B) Diagnosis
C) Pathophysiology
D) Etiology
Answer: C
Rationale: Pathophysiology is the study of the underlying changes in body physiology that
result from disease or injury. It focuses on the functional changes that occur in the body as
a result of disease processes. Pathology, by contrast, is the investigation of structural
alterations in cells, tissues, and organs. Diagnosis is the naming or identification of a
disease based on evidence, and etiology is the study of the cause of disease .
2. A patient presents with signs and symptoms of a disease. The nurse understands
that the process of naming or identifying the disease is called:
A) Diagnosis
B) Prognosis
C) Etiology
D) Epidemiology
Answer: A
Rationale: Diagnosis is the naming or identification of a disease made from an evaluation
of the evidence accumulated from presenting signs and symptoms, health and medical
history, physical examination, laboratory tests, and imaging . Epidemiology tracks patterns
of disease occurrence among populations .
,3. Which cellular adaptation involves a decrease in cell size as a response to
reduced workload or adverse environmental conditions?
A) Hypertrophy
B) Hyperplasia
C) Atrophy
D) Metaplasia
Answer: C
Rationale: Atrophy is a decrease in cell size, often resulting from reduced workload, loss of
innervation, diminished blood supply, or inadequate nutrition. Hypertrophy is an increase
in cell size, hyperplasia is an increase in cell number, and metaplasia is the reversible
replacement of one mature cell type by another .
4. A nurse is caring for a patient who has experienced chronic hypertension. The
left ventricle of the heart has increased in size. This is best described as:
A) Hyperplasia
B) Hypertrophy
C) Dysplasia
D) Atrophy
Answer: B
Rationale: Hypertrophy is an increase in cell size, which occurs in cardiac muscle cells in
response to increased workload or pressure overload, such as in chronic hypertension. This
type of adaptation is a response to increased demand and is intended to maintain
function. Hyperplasia would be an increase in cell number, which does not occur in cardiac
muscle .
5. A patient with gastroesophageal reflux disease (GERD) has undergone an
endoscopy, and the normal squamous epithelium of the esophagus has been
replaced by columnar epithelium. This cellular change is termed:
A) Dysplasia
B) Metaplasia
, C) Atrophy
D) Hypertrophy
Answer: B
Rationale: Metaplasia is the reversible replacement of one mature cell type by another,
less mature cell type, often in response to chronic irritation or inflammation. In GERD, the
squamous epithelium of the esophagus is replaced by columnar epithelium (Barrett
esophagus) to better withstand the acidic environment .
6. Which organelle is responsible for cellular protein synthesis?
A) Mitochondria
B) Golgi apparatus
C) Ribosomes
D) Lysosomes
Answer: C
Rationale: Ribosomes provide the sites for cellular protein synthesis. They translate
messenger RNA into polypeptide chains .
7. The organelle that is responsible for processing and packaging proteins into
secretory vesicles is the:
A) Endoplasmic reticulum
B) Golgi apparatus
C) Nucleus
D) Mitochondria
Answer: B
Rationale: The Golgi apparatus is responsible for processing and packaging proteins onto
secretory vesicles that break away from the complex and migrate to various intracellular
and extracellular destinations, including the plasma membrane .
PATHOLOGY, AND CELLULAR ADAPTATION (Questions 1–20)
1. The study of the underlying changes in body physiology (molecular, cellular,
and organ systems) that result from disease or injury is defined as:
A) Pathology
B) Diagnosis
C) Pathophysiology
D) Etiology
Answer: C
Rationale: Pathophysiology is the study of the underlying changes in body physiology that
result from disease or injury. It focuses on the functional changes that occur in the body as
a result of disease processes. Pathology, by contrast, is the investigation of structural
alterations in cells, tissues, and organs. Diagnosis is the naming or identification of a
disease based on evidence, and etiology is the study of the cause of disease .
2. A patient presents with signs and symptoms of a disease. The nurse understands
that the process of naming or identifying the disease is called:
A) Diagnosis
B) Prognosis
C) Etiology
D) Epidemiology
Answer: A
Rationale: Diagnosis is the naming or identification of a disease made from an evaluation
of the evidence accumulated from presenting signs and symptoms, health and medical
history, physical examination, laboratory tests, and imaging . Epidemiology tracks patterns
of disease occurrence among populations .
,3. Which cellular adaptation involves a decrease in cell size as a response to
reduced workload or adverse environmental conditions?
A) Hypertrophy
B) Hyperplasia
C) Atrophy
D) Metaplasia
Answer: C
Rationale: Atrophy is a decrease in cell size, often resulting from reduced workload, loss of
innervation, diminished blood supply, or inadequate nutrition. Hypertrophy is an increase
in cell size, hyperplasia is an increase in cell number, and metaplasia is the reversible
replacement of one mature cell type by another .
4. A nurse is caring for a patient who has experienced chronic hypertension. The
left ventricle of the heart has increased in size. This is best described as:
A) Hyperplasia
B) Hypertrophy
C) Dysplasia
D) Atrophy
Answer: B
Rationale: Hypertrophy is an increase in cell size, which occurs in cardiac muscle cells in
response to increased workload or pressure overload, such as in chronic hypertension. This
type of adaptation is a response to increased demand and is intended to maintain
function. Hyperplasia would be an increase in cell number, which does not occur in cardiac
muscle .
5. A patient with gastroesophageal reflux disease (GERD) has undergone an
endoscopy, and the normal squamous epithelium of the esophagus has been
replaced by columnar epithelium. This cellular change is termed:
A) Dysplasia
B) Metaplasia
, C) Atrophy
D) Hypertrophy
Answer: B
Rationale: Metaplasia is the reversible replacement of one mature cell type by another,
less mature cell type, often in response to chronic irritation or inflammation. In GERD, the
squamous epithelium of the esophagus is replaced by columnar epithelium (Barrett
esophagus) to better withstand the acidic environment .
6. Which organelle is responsible for cellular protein synthesis?
A) Mitochondria
B) Golgi apparatus
C) Ribosomes
D) Lysosomes
Answer: C
Rationale: Ribosomes provide the sites for cellular protein synthesis. They translate
messenger RNA into polypeptide chains .
7. The organelle that is responsible for processing and packaging proteins into
secretory vesicles is the:
A) Endoplasmic reticulum
B) Golgi apparatus
C) Nucleus
D) Mitochondria
Answer: B
Rationale: The Golgi apparatus is responsible for processing and packaging proteins onto
secretory vesicles that break away from the complex and migrate to various intracellular
and extracellular destinations, including the plasma membrane .
