NURS 6501 ADVANCED PATHOPHYSIOLOGY MIDTERM
EXAM LATEST 2026 | Questions & Verified Answers | Walden
University | Pass Guaranteed - A+ Graded
SECTION 1: CELLULAR PATHOPHYSIOLOGY & GENETICS (12 Questions)
Q1. A 45-year-old patient with chronic hypertension presents for follow-up. The nurse
practitioner notes on echocardiogram that the left ventricular wall thickness has
increased significantly, but the chamber size is normal. This cellular adaptation is best
described as:
A. Atrophy
B. Hypertrophy [CORRECT]
C. Hyperplasia
D. Metaplasia
Rationale: For NURS 6501 midterm, remember that hypertrophy is an increase in cell
size, not number, resulting in enlarged tissue mass. In chronic hypertension, the heart
muscle cells increase in size to generate more force against elevated afterload. This is
different from hyperplasia (increase in cell number), atrophy (decrease in size), and
metaplasia (change in cell type).
Correct Answer: B
,Q2. A patient suffers a myocardial infarction. The affected cardiac tissue shows
preserved cell outlines with loss of nuclei and cytoplasmic detail, but the tissue
architecture remains intact. This pattern of cell death is characteristic of:
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Rationale: That's right because coagulative necrosis is typical of ischemic injury in solid
organs like the heart, kidney, and spleen. The architectural framework is preserved for
days due to the denaturation of structural and enzymatic proteins, which prevents
enzymatic liquefaction. Liquefactive necrosis occurs in the brain and with bacterial
infections, caseous necrosis in tuberculosis, and fat necrosis in acute pancreatitis or
breast trauma.
Correct Answer: B
Q3. A 28-year-old woman is diagnosed with systemic lupus erythematosus (SLE). Her
disease involves the production of autoantibodies against self-antigens. The breakdown
of self-tolerance in this patient is most likely due to:
A. Complete absence of all T cells in the thymus
B. Defective peripheral tolerance mechanisms and molecular mimicry [CORRECT]
C. Excessive production of regulatory T cells
D. Absence of all B cell receptors
,Rationale: For NURS 6501 midterm, remember that autoimmune diseases like SLE result
from a breakdown in both central and peripheral tolerance. Molecular mimicry (where
foreign antigens resemble self-antigens), defective regulatory T cell function, and
epitope spreading all contribute. It's not about absent T cells or excessive Tregs —
rather, it's a dysregulation of the delicate balance that normally prevents self-reactivity.
Correct Answer: B
Q4. A patient with a history of chronic alcohol use presents with severe abdominal pain.
CT shows diffuse pancreatic inflammation with areas of chalky white deposits. The
pathophysiology of these deposits involves:
A. Activation of trypsinogen to trypsin within acinar cells, leading to autodigestion and
fat necrosis with calcium soap formation [CORRECT]
B. Bacterial infection of the pancreas with gas-forming organisms
C. Ischemic injury to the pancreas from splenic artery occlusion
D. Autoimmune destruction of pancreatic beta cells
Rationale: That's right because acute pancreatitis involves premature activation of
digestive enzymes within the pancreas itself. Trypsinogen activation to trypsin triggers
a cascade of autodigestion. Fat necrosis occurs when lipase breaks down triglycerides,
releasing fatty acids that combine with calcium to form insoluble calcium soaps (the
chalky white deposits seen on imaging and at surgery).
Correct Answer: A
, Q5. A 35-year-old man is diagnosed with Huntington's disease. Genetic testing reveals
an expanded CAG trinucleotide repeat in the HTT gene. This type of genetic alteration is
classified as:
A. Chromosomal aneuploidy
B. Single-gene disorder with dynamic mutation [CORRECT]
C. Multifactorial inheritance
D. Mitochondrial DNA mutation
Rationale: On the NURS 6501 midterm, remember that Huntington's disease is an
autosomal dominant disorder caused by expanded CAG repeats in the HTT gene. The
number of repeats tends to increase in subsequent generations (anticipation),
particularly when transmitted paternally. This is a dynamic mutation, not a static single
nucleotide change. The expanded polyglutamine tract causes protein misfolding and
aggregation.
Correct Answer: B
Q6. A patient with a BRCA1 mutation develops breast cancer. The normal function of
BRCA1 is to:
A. Promote cell cycle progression by activating cyclin-dependent kinases
B. Repair DNA double-strand breaks through homologous recombination [CORRECT]
C. Inhibit apoptosis by blocking caspase activation
D. Activate the RAS-MAPK signaling pathway for cell proliferation
EXAM LATEST 2026 | Questions & Verified Answers | Walden
University | Pass Guaranteed - A+ Graded
SECTION 1: CELLULAR PATHOPHYSIOLOGY & GENETICS (12 Questions)
Q1. A 45-year-old patient with chronic hypertension presents for follow-up. The nurse
practitioner notes on echocardiogram that the left ventricular wall thickness has
increased significantly, but the chamber size is normal. This cellular adaptation is best
described as:
A. Atrophy
B. Hypertrophy [CORRECT]
C. Hyperplasia
D. Metaplasia
Rationale: For NURS 6501 midterm, remember that hypertrophy is an increase in cell
size, not number, resulting in enlarged tissue mass. In chronic hypertension, the heart
muscle cells increase in size to generate more force against elevated afterload. This is
different from hyperplasia (increase in cell number), atrophy (decrease in size), and
metaplasia (change in cell type).
Correct Answer: B
,Q2. A patient suffers a myocardial infarction. The affected cardiac tissue shows
preserved cell outlines with loss of nuclei and cytoplasmic detail, but the tissue
architecture remains intact. This pattern of cell death is characteristic of:
A. Liquefactive necrosis
B. Coagulative necrosis [CORRECT]
C. Caseous necrosis
D. Fat necrosis
Rationale: That's right because coagulative necrosis is typical of ischemic injury in solid
organs like the heart, kidney, and spleen. The architectural framework is preserved for
days due to the denaturation of structural and enzymatic proteins, which prevents
enzymatic liquefaction. Liquefactive necrosis occurs in the brain and with bacterial
infections, caseous necrosis in tuberculosis, and fat necrosis in acute pancreatitis or
breast trauma.
Correct Answer: B
Q3. A 28-year-old woman is diagnosed with systemic lupus erythematosus (SLE). Her
disease involves the production of autoantibodies against self-antigens. The breakdown
of self-tolerance in this patient is most likely due to:
A. Complete absence of all T cells in the thymus
B. Defective peripheral tolerance mechanisms and molecular mimicry [CORRECT]
C. Excessive production of regulatory T cells
D. Absence of all B cell receptors
,Rationale: For NURS 6501 midterm, remember that autoimmune diseases like SLE result
from a breakdown in both central and peripheral tolerance. Molecular mimicry (where
foreign antigens resemble self-antigens), defective regulatory T cell function, and
epitope spreading all contribute. It's not about absent T cells or excessive Tregs —
rather, it's a dysregulation of the delicate balance that normally prevents self-reactivity.
Correct Answer: B
Q4. A patient with a history of chronic alcohol use presents with severe abdominal pain.
CT shows diffuse pancreatic inflammation with areas of chalky white deposits. The
pathophysiology of these deposits involves:
A. Activation of trypsinogen to trypsin within acinar cells, leading to autodigestion and
fat necrosis with calcium soap formation [CORRECT]
B. Bacterial infection of the pancreas with gas-forming organisms
C. Ischemic injury to the pancreas from splenic artery occlusion
D. Autoimmune destruction of pancreatic beta cells
Rationale: That's right because acute pancreatitis involves premature activation of
digestive enzymes within the pancreas itself. Trypsinogen activation to trypsin triggers
a cascade of autodigestion. Fat necrosis occurs when lipase breaks down triglycerides,
releasing fatty acids that combine with calcium to form insoluble calcium soaps (the
chalky white deposits seen on imaging and at surgery).
Correct Answer: A
, Q5. A 35-year-old man is diagnosed with Huntington's disease. Genetic testing reveals
an expanded CAG trinucleotide repeat in the HTT gene. This type of genetic alteration is
classified as:
A. Chromosomal aneuploidy
B. Single-gene disorder with dynamic mutation [CORRECT]
C. Multifactorial inheritance
D. Mitochondrial DNA mutation
Rationale: On the NURS 6501 midterm, remember that Huntington's disease is an
autosomal dominant disorder caused by expanded CAG repeats in the HTT gene. The
number of repeats tends to increase in subsequent generations (anticipation),
particularly when transmitted paternally. This is a dynamic mutation, not a static single
nucleotide change. The expanded polyglutamine tract causes protein misfolding and
aggregation.
Correct Answer: B
Q6. A patient with a BRCA1 mutation develops breast cancer. The normal function of
BRCA1 is to:
A. Promote cell cycle progression by activating cyclin-dependent kinases
B. Repair DNA double-strand breaks through homologous recombination [CORRECT]
C. Inhibit apoptosis by blocking caspase activation
D. Activate the RAS-MAPK signaling pathway for cell proliferation
