Pathophysiology Exam 1 Practice Problems With Multiple
Choice Options, Correct Answers, and Expert Rationales
1. A patient is found to have liver disease, resulting in the removal of a lobe of his liver. Adaptation
to the reduced size of the liver leads to ______ of the remaining liver cells.
A. Metaplasia
B. Organ atrophy
C. Compensatory hyperplasia
D. Physiologic hyperplasia
Correct Answer: C. Compensatory hyperplasia
Rationale: Compensatory hyperplasia is an adaptive mechanism that enables certain organs to
regenerate. When a portion of the liver is removed, the remaining cells proliferate to restore the liver
to its original mass. This is a classic example of compensatory hyperplasia. Metaplasia (A) refers to
the reversible replacement of one mature cell type by another. Organ atrophy (B) refers to shrinkage
of an organ. Physiologic hyperplasia (D) refers to hormonal hyperplasia (e.g., breast enlargement
during pregnancy) or compensatory hyperplasia, but the specific term for regeneration after tissue
loss is compensatory hyperplasia.
2. An older adult patient comes to the clinic complaining of not being able to do what he used to
be able to. You know that normal changes associated with aging include: (Select all that apply.)
A. Improved blood flow
B. Slowed metabolic rate
C. Decreased brain weight
D. Improved nerve fiber conduction
E. Less respiratory capacity
Correct Answer: B, C, E
Rationale: Normal aging is associated with a slowed metabolic rate (B), decreased brain weight (C),
and decreased respiratory capacity (E). Improved blood flow (A) and improved nerve fiber
conduction (D) are not normal age-related changes; in fact, both tend to decline with age. These
changes reflect the physiologic aging process and are important considerations in geriatric
assessment.
3. A 20-year-old college student has presented to her campus medical clinic for a scheduled Pap
smear. The clinician who will interpret the smear will examine cell samples for evidence of:
A. Changes in cell shape, size, and organization
B. Presence of unexpected cell types
C. Ischemic changes in cell sample
D. Abnormally high numbers of cells
Correct Answer: A. Changes in cell shape, size, and organization
,Rationale: A Pap smear is performed to detect cervical dysplasia or malignancy. The pathologist
examines the cells for changes in cell shape, size, and organization (A), which are hallmarks of
dysplasia and malignancy. The presence of unexpected cell types (B) is more relevant to other types
of cytology. Ischemic changes (C) are not the primary focus of a Pap smear. Abnormally high numbers
of cells (D) may be seen in hyperplasia but are not the primary diagnostic criterion for cervical cancer
screening.
4. The parents of a 4-year-old girl have sought care because their daughter has admitted to
chewing and swallowing imported toy figurines that have been determined to be made of lead.
Which of the following blood tests should the care team prioritize?
A. White blood cell levels with differential
B. Red blood cell levels and morphology
C. Urea and creatinine levels
D. Liver function panel
Correct Answer: B. Red blood cell levels and morphology
Rationale: Lead poisoning causes anemia by interfering with heme synthesis and causing red blood
cell lysis. The priority is to assess red blood cell levels and morphology (B) because lead poisoning
can cause life-threatening anemia, which can lead to shock or permanent organ damage. White
blood cell levels (A) are not the priority because there is no infection involved. Urea and creatinine
(C) assess kidney function, and liver function panel (D) assesses liver function—both are important in
lead poisoning but not the priority. The most life-threatening consequence is anemia, making B the
correct answer.
5. A patient with severe peripheral vascular disease has developed signs of dry gangrene on the
great toe of one foot. Which of the following pathophysiologic processes most likely contributed to
this diagnosis?
A. Inappropriate activation of apoptosis
B. Bacterial invasion
C. Impaired arterial blood supply
D. Metaplastic cellular changes
Correct Answer: C. Impaired arterial blood supply
Rationale: Dry gangrene is caused by impaired arterial blood supply (C), leading to ischemia and
tissue death. The tissue becomes dry, shriveled, and dark. While bacterial invasion (B) can occur in
wet gangrene, dry gangrene is primarily ischemic in origin. Inappropriate apoptosis (A) is not the
primary mechanism. Metaplastic cellular changes (D) are adaptive changes, not the cause of
gangrene. Note: The original answer key incorrectly marked B; the correct answer is C based on
pathophysiology principles.
6. Although stress exposure initiates integrated responses by multiple systems, the most important
changes are first activated by which system?
, A. Pulmonary
B. Gastrointestinal
C. Neuroendocrine
D. Cardiovascular
Correct Answer: C. Neuroendocrine
Rationale: The neuroendocrine system (C) is the first and most important system activated in
response to stress. The hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic nervous
system are rapidly activated, leading to the release of corticotropin-releasing hormone (CRH),
adrenocorticotropic hormone (ACTH), cortisol, and catecholamines. These hormones then affect
other systems, including the cardiovascular, pulmonary, and gastrointestinal systems.
7. Which manifestation of stress reflects the non-specific fight or flight response?
A. Decreased pupillary light response
B. Increased GI motility
C. Decreased short-term memory
D. Increased cardiopulmonary rates
Correct Answer: D. Increased cardiopulmonary rates
Rationale: The fight-or-flight response is characterized by increased cardiopulmonary rates (D),
including increased heart rate, blood pressure, and respiratory rate. This is a physiologic response to
stress mediated by catecholamines. Decreased pupillary light response (A) is not typical; pupils
typically dilate. Increased GI motility (B) is not typical; GI motility usually decreases during stress.
Decreased short-term memory (C) can occur with chronic stress but is not part of the acute fight-or-
flight response.
8. Stress-induced cortisol hormone secretion is associated with:
A. Increased growth hormone level
B. Regulation of the stress response
C. Increased thyroid-stimulating hormone
D. Depressed adrenal gland function
Correct Answer: B. Regulation of the stress response
Rationale: Cortisol is a glucocorticoid that helps regulate the stress response (B) by increasing blood
glucose, suppressing the immune response, and maintaining vascular tone. Growth hormone levels
(A) decrease with stress, not increase. Thyroid-stimulating hormone (C) is not primarily associated
with the stress response. Adrenal gland function (D) is not depressed; ACTH from the anterior
pituitary stimulates the adrenal glands to release cortisol.
9. Which of the following factors are known to contribute to an individual's ability to adapt to
stress? (Select all that apply.)
Choice Options, Correct Answers, and Expert Rationales
1. A patient is found to have liver disease, resulting in the removal of a lobe of his liver. Adaptation
to the reduced size of the liver leads to ______ of the remaining liver cells.
A. Metaplasia
B. Organ atrophy
C. Compensatory hyperplasia
D. Physiologic hyperplasia
Correct Answer: C. Compensatory hyperplasia
Rationale: Compensatory hyperplasia is an adaptive mechanism that enables certain organs to
regenerate. When a portion of the liver is removed, the remaining cells proliferate to restore the liver
to its original mass. This is a classic example of compensatory hyperplasia. Metaplasia (A) refers to
the reversible replacement of one mature cell type by another. Organ atrophy (B) refers to shrinkage
of an organ. Physiologic hyperplasia (D) refers to hormonal hyperplasia (e.g., breast enlargement
during pregnancy) or compensatory hyperplasia, but the specific term for regeneration after tissue
loss is compensatory hyperplasia.
2. An older adult patient comes to the clinic complaining of not being able to do what he used to
be able to. You know that normal changes associated with aging include: (Select all that apply.)
A. Improved blood flow
B. Slowed metabolic rate
C. Decreased brain weight
D. Improved nerve fiber conduction
E. Less respiratory capacity
Correct Answer: B, C, E
Rationale: Normal aging is associated with a slowed metabolic rate (B), decreased brain weight (C),
and decreased respiratory capacity (E). Improved blood flow (A) and improved nerve fiber
conduction (D) are not normal age-related changes; in fact, both tend to decline with age. These
changes reflect the physiologic aging process and are important considerations in geriatric
assessment.
3. A 20-year-old college student has presented to her campus medical clinic for a scheduled Pap
smear. The clinician who will interpret the smear will examine cell samples for evidence of:
A. Changes in cell shape, size, and organization
B. Presence of unexpected cell types
C. Ischemic changes in cell sample
D. Abnormally high numbers of cells
Correct Answer: A. Changes in cell shape, size, and organization
,Rationale: A Pap smear is performed to detect cervical dysplasia or malignancy. The pathologist
examines the cells for changes in cell shape, size, and organization (A), which are hallmarks of
dysplasia and malignancy. The presence of unexpected cell types (B) is more relevant to other types
of cytology. Ischemic changes (C) are not the primary focus of a Pap smear. Abnormally high numbers
of cells (D) may be seen in hyperplasia but are not the primary diagnostic criterion for cervical cancer
screening.
4. The parents of a 4-year-old girl have sought care because their daughter has admitted to
chewing and swallowing imported toy figurines that have been determined to be made of lead.
Which of the following blood tests should the care team prioritize?
A. White blood cell levels with differential
B. Red blood cell levels and morphology
C. Urea and creatinine levels
D. Liver function panel
Correct Answer: B. Red blood cell levels and morphology
Rationale: Lead poisoning causes anemia by interfering with heme synthesis and causing red blood
cell lysis. The priority is to assess red blood cell levels and morphology (B) because lead poisoning
can cause life-threatening anemia, which can lead to shock or permanent organ damage. White
blood cell levels (A) are not the priority because there is no infection involved. Urea and creatinine
(C) assess kidney function, and liver function panel (D) assesses liver function—both are important in
lead poisoning but not the priority. The most life-threatening consequence is anemia, making B the
correct answer.
5. A patient with severe peripheral vascular disease has developed signs of dry gangrene on the
great toe of one foot. Which of the following pathophysiologic processes most likely contributed to
this diagnosis?
A. Inappropriate activation of apoptosis
B. Bacterial invasion
C. Impaired arterial blood supply
D. Metaplastic cellular changes
Correct Answer: C. Impaired arterial blood supply
Rationale: Dry gangrene is caused by impaired arterial blood supply (C), leading to ischemia and
tissue death. The tissue becomes dry, shriveled, and dark. While bacterial invasion (B) can occur in
wet gangrene, dry gangrene is primarily ischemic in origin. Inappropriate apoptosis (A) is not the
primary mechanism. Metaplastic cellular changes (D) are adaptive changes, not the cause of
gangrene. Note: The original answer key incorrectly marked B; the correct answer is C based on
pathophysiology principles.
6. Although stress exposure initiates integrated responses by multiple systems, the most important
changes are first activated by which system?
, A. Pulmonary
B. Gastrointestinal
C. Neuroendocrine
D. Cardiovascular
Correct Answer: C. Neuroendocrine
Rationale: The neuroendocrine system (C) is the first and most important system activated in
response to stress. The hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic nervous
system are rapidly activated, leading to the release of corticotropin-releasing hormone (CRH),
adrenocorticotropic hormone (ACTH), cortisol, and catecholamines. These hormones then affect
other systems, including the cardiovascular, pulmonary, and gastrointestinal systems.
7. Which manifestation of stress reflects the non-specific fight or flight response?
A. Decreased pupillary light response
B. Increased GI motility
C. Decreased short-term memory
D. Increased cardiopulmonary rates
Correct Answer: D. Increased cardiopulmonary rates
Rationale: The fight-or-flight response is characterized by increased cardiopulmonary rates (D),
including increased heart rate, blood pressure, and respiratory rate. This is a physiologic response to
stress mediated by catecholamines. Decreased pupillary light response (A) is not typical; pupils
typically dilate. Increased GI motility (B) is not typical; GI motility usually decreases during stress.
Decreased short-term memory (C) can occur with chronic stress but is not part of the acute fight-or-
flight response.
8. Stress-induced cortisol hormone secretion is associated with:
A. Increased growth hormone level
B. Regulation of the stress response
C. Increased thyroid-stimulating hormone
D. Depressed adrenal gland function
Correct Answer: B. Regulation of the stress response
Rationale: Cortisol is a glucocorticoid that helps regulate the stress response (B) by increasing blood
glucose, suppressing the immune response, and maintaining vascular tone. Growth hormone levels
(A) decrease with stress, not increase. Thyroid-stimulating hormone (C) is not primarily associated
with the stress response. Adrenal gland function (D) is not depressed; ACTH from the anterior
pituitary stimulates the adrenal glands to release cortisol.
9. Which of the following factors are known to contribute to an individual's ability to adapt to
stress? (Select all that apply.)
