NR-283 Exam 1: Pathophysiology V1 Updated and Latest
Questions and Correct Answers with Rationale -
Chamberlain University
1. Which cellular adaptation is characterized by a decrease in the size of cells, resulting in
reduced tissue mass?
A. Metaplasia
B. Hypertrophy
C. Hyperplasia
D. Atrophy
Ans: D
Rationale: Atrophy represents a decrease in cell size leading to a reduction in the overall mass of the
tissue or organ. This process often occurs due to disuse, loss of endocrine stimulation, or inadequate
nutrition to the area. It is a protective mechanism that allows cells to survive in less-than-optimal
conditions by reducing metabolic needs. Nurses must recognize atrophy in patients who are immobilized
to provide appropriate physical therapy interventions. If the underlying cause is addressed early, some
forms of atrophy may be partially reversible. This concept is a fundamental part of understanding how
the body responds to chronic stress.
,2. When the heart works harder due to high blood pressure, the cardiac muscle cells
increase in size. This is an example of:
A. Hypertrophy
B. Atrophy
C. Hyperplasia
D. Dysplasia
Ans: A
Rationale: Hypertrophy involves an increase in the size of individual cells, which consequently increases
the size of the organ. This is common in tissues like cardiac and skeletal muscle that cannot increase their
cell number through division. In the case of hypertension, the heart muscle enlarges to compensate for
the increased workload required to pump blood. Nurses monitor patients with cardiac hypertrophy as it
can eventually lead to heart failure if left untreated. Understanding this adaptation helps clinicians
evaluate the severity of a patient’s cardiovascular disease. It is a critical example of how physiological
stress leads to structural changes in vital organs.
,3. Which of the following describes the replacement of one mature cell type by another
mature cell type in response to chronic irritation?
A. Anaplasia
B. Metaplasia
C. Dysplasia
D. Hyperplasia
Ans: B
Rationale: Metaplasia is a reversible change in which one adult cell type is replaced by another more
resilient cell type. This typically occurs in response to chronic irritation or inflammation, such as the
changes in respiratory epithelium in smokers. While the new cells are better suited for the harsh
environment, they often lose specialized functions like mucus secretion. If the irritating stimulus is
removed, the tissue can often revert to its original specialized state. Nurses educate patients on the
importance of removing irritants to prevent further tissue damage. Recognizing metaplasia is vital
because persistent irritation can eventually lead to more dangerous cellular changes.
, 4. Which term is used to describe tissue in which the cells vary in size and shape, and the
large nuclei are frequently increased in rate of mitosis?
A. Atrophy
B. Hypertrophy
C. Metaplasia
D. Dysplasia
Ans: D
Rationale: Dysplasia refers to abnormal changes in the size, shape, and organization of mature cells
within a tissue. It is often considered a precancerous state because the cells are no longer uniform and
show increased mitotic activity. Frequent monitoring through diagnostic tests like Pap smears is
necessary to detect dysplasia in its early stages. Healthcare providers prioritize interventions when
dysplasia is found to prevent the progression to malignancy. This cellular adaptation is a significant
indicator of potential disease and requires close clinical follow-up. Understanding dysplasia helps
students grasp the transition from normal cellular function to neoplastic growth.
5. Programmed cell death that does not result in an inflammatory response is known as:
A. Infarction
B. Necrosis
C. Apoptosis
D. Ischemia
Ans: C
Questions and Correct Answers with Rationale -
Chamberlain University
1. Which cellular adaptation is characterized by a decrease in the size of cells, resulting in
reduced tissue mass?
A. Metaplasia
B. Hypertrophy
C. Hyperplasia
D. Atrophy
Ans: D
Rationale: Atrophy represents a decrease in cell size leading to a reduction in the overall mass of the
tissue or organ. This process often occurs due to disuse, loss of endocrine stimulation, or inadequate
nutrition to the area. It is a protective mechanism that allows cells to survive in less-than-optimal
conditions by reducing metabolic needs. Nurses must recognize atrophy in patients who are immobilized
to provide appropriate physical therapy interventions. If the underlying cause is addressed early, some
forms of atrophy may be partially reversible. This concept is a fundamental part of understanding how
the body responds to chronic stress.
,2. When the heart works harder due to high blood pressure, the cardiac muscle cells
increase in size. This is an example of:
A. Hypertrophy
B. Atrophy
C. Hyperplasia
D. Dysplasia
Ans: A
Rationale: Hypertrophy involves an increase in the size of individual cells, which consequently increases
the size of the organ. This is common in tissues like cardiac and skeletal muscle that cannot increase their
cell number through division. In the case of hypertension, the heart muscle enlarges to compensate for
the increased workload required to pump blood. Nurses monitor patients with cardiac hypertrophy as it
can eventually lead to heart failure if left untreated. Understanding this adaptation helps clinicians
evaluate the severity of a patient’s cardiovascular disease. It is a critical example of how physiological
stress leads to structural changes in vital organs.
,3. Which of the following describes the replacement of one mature cell type by another
mature cell type in response to chronic irritation?
A. Anaplasia
B. Metaplasia
C. Dysplasia
D. Hyperplasia
Ans: B
Rationale: Metaplasia is a reversible change in which one adult cell type is replaced by another more
resilient cell type. This typically occurs in response to chronic irritation or inflammation, such as the
changes in respiratory epithelium in smokers. While the new cells are better suited for the harsh
environment, they often lose specialized functions like mucus secretion. If the irritating stimulus is
removed, the tissue can often revert to its original specialized state. Nurses educate patients on the
importance of removing irritants to prevent further tissue damage. Recognizing metaplasia is vital
because persistent irritation can eventually lead to more dangerous cellular changes.
, 4. Which term is used to describe tissue in which the cells vary in size and shape, and the
large nuclei are frequently increased in rate of mitosis?
A. Atrophy
B. Hypertrophy
C. Metaplasia
D. Dysplasia
Ans: D
Rationale: Dysplasia refers to abnormal changes in the size, shape, and organization of mature cells
within a tissue. It is often considered a precancerous state because the cells are no longer uniform and
show increased mitotic activity. Frequent monitoring through diagnostic tests like Pap smears is
necessary to detect dysplasia in its early stages. Healthcare providers prioritize interventions when
dysplasia is found to prevent the progression to malignancy. This cellular adaptation is a significant
indicator of potential disease and requires close clinical follow-up. Understanding dysplasia helps
students grasp the transition from normal cellular function to neoplastic growth.
5. Programmed cell death that does not result in an inflammatory response is known as:
A. Infarction
B. Necrosis
C. Apoptosis
D. Ischemia
Ans: C
