NSG4330 COMPREHENSIVE COMPLETE EXAM QUESTIONS AND 100%
VERIFIED ANSWERS (PASS GUARANTEE)
1. Q: What is the primary difference between hyperplasia and
hypertrophy? ANSWER Hyperplasia is an increase in the number of cells,
while hypertrophy is an increase in the size of existing cells. Hyperplasia can
only occur in cells capable of mitotic division.
2. Q: What are the four cardinal signs of inflammation? ANSWER Rubor
(redness), calor (heat), tumor (swelling), and dolor (pain). A fifth sign, loss of
function, is sometimes included.
3. Q: What is apoptosis and how does it differ from necrosis? ANSWER
Apoptosis is programmed cell death that is organized and energy-dependent,
producing no inflammation. Necrosis is uncontrolled cell death caused by
injury, resulting in inflammation and cellular debris.
4. Q: What is the primary function of cytokines in inflammation?
ANSWER Cytokines are signaling molecules that mediate and regulate
immunity and inflammation. They facilitate communication between cells and
coordinate the inflammatory response.
5. Q: What is metaplasia? ANSWER Metaplasia is the reversible
replacement of one differentiated cell type with another cell type, usually as an
adaptive response to chronic stress or irritation.
6. Q: What are the three stages of general adaptation syndrome?
ANSWER Alarm stage (immediate stress response), resistance stage
(adaptation to stressor), and exhaustion stage (depletion of adaptive resources if
stress continues).
7. Q: What is the difference between exudate and transudate? ANSWER
Exudate is protein-rich fluid resulting from increased vascular permeability
,during inflammation. Transudate is protein-poor fluid resulting from hydrostatic
or osmotic imbalances without inflammation.
8. Q: What are free radicals and why are they harmful? ANSWER Free
radicals are unstable molecules with unpaired electrons that can damage cellular
components including DNA, proteins, and lipids through oxidative stress.
9. Q: What is ischemia-reperfusion injury? ANSWER Paradoxical tissue
damage that occurs when blood supply returns to tissue after ischemia. The
restoration of oxygen can generate free radicals causing additional cellular
injury.
10. Q: What is the role of mast cells in inflammation? ANSWER Mast cells
release histamine and other mediators that increase vascular permeability, cause
vasodilation, and recruit other inflammatory cells to the site of injury.
11. Q: What is cachexia? ANSWER Cachexia is severe weight loss and
muscle wasting seen in chronic diseases like cancer, characterized by loss of
skeletal muscle mass that cannot be reversed by nutritional support alone.
12. Q: What is the difference between innate and adaptive immunity?
ANSWER Innate immunity is immediate, non-specific defense present from
birth. Adaptive immunity is specific, develops over time, and creates
immunologic memory.
13. Q: What is atrophy? ANSWER Atrophy is a decrease in cell size and
number, resulting in reduced tissue or organ size. It can result from disuse,
denervation, inadequate nutrition, or decreased hormonal stimulation.
14. Q: What are the five types of necrosis? ANSWER Coagulative,
liquefactive, caseous, fat, and gangrenous necrosis. Each type occurs in
different tissues and under different conditions.
15. Q: What is dysplasia? ANSWER Dysplasia is abnormal cell growth
characterized by changes in cell size, shape, and organization. It is often a
precursor to cancer but may be reversible if the causative stimulus is removed.
16. Q: What is the role of complement in immunity? ANSWER The
complement system enhances antibody and phagocyte ability to clear
pathogens, promotes inflammation, and directly attacks pathogen cell
membranes through membrane attack complex formation.
17. Q: What is oxidative stress? ANSWER An imbalance between free
radical production and antioxidant defenses, leading to cellular damage. It
,contributes to aging and various diseases including cancer and cardiovascular
disease.
18. Q: What are heat shock proteins? ANSWER Proteins produced by cells
in response to stressful conditions that help protect other proteins from damage
and assist in protein refolding and repair.
19. Q: What is cellular adaptation? ANSWER Reversible structural and
functional changes that allow cells to respond to environmental changes and
maintain viability. Examples include hypertrophy, hyperplasia, atrophy, and
metaplasia.
20. Q: What is the difference between primary and secondary intention
wound healing? ANSWER Primary intention occurs in clean wounds with
approximated edges, minimal scarring. Secondary intention occurs in wounds
with tissue loss, healing by granulation tissue formation with more scarring.
21. Q: What is granulation tissue? ANSWER New connective tissue and
microscopic blood vessels that form during wound healing, appearing pink and
granular. It fills in wounds healing by secondary intention.
22. Q: What are the phases of wound healing? ANSWER Hemostasis,
inflammation, proliferation, and remodeling. Each phase involves specific
cellular activities and timeframes.
23. Q: What is keloid formation? ANSWER Excessive scar tissue formation
that extends beyond the original wound boundaries, resulting from abnormal
collagen metabolism during healing.
24. Q: What is the role of neutrophils in acute inflammation? ANSWER
Neutrophils are first responders that phagocytose bacteria and debris, release
antimicrobial substances, and form neutrophil extracellular traps to contain
pathogens.
25. Q: What is chronic inflammation? ANSWER Prolonged inflammation
lasting weeks to years, characterized by simultaneous tissue destruction and
repair, with lymphocytes and macrophages predominating.
26. Q: What is angiogenesis? ANSWER The formation of new blood vessels
from existing vessels, essential for wound healing, tissue growth, and
unfortunately also tumor development.
27. Q: What are the hallmarks of cancer cells? ANSWER Sustained
proliferative signaling, evading growth suppressors, resisting cell death,
, enabling replicative immortality, inducing angiogenesis, and activating invasion
and metastasis.
28. Q: What is the Warburg effect? ANSWER Cancer cells preferentially
use glycolysis for energy production even in the presence of oxygen, producing
lactate rather than using more efficient oxidative phosphorylation.
29. Q: What is tumor suppressor gene function? ANSWER Tumor
suppressor genes regulate cell division, repair DNA damage, and control
apoptosis. Loss of function through mutation contributes to cancer
development.
30. Q: What is an oncogene? ANSWER A mutated gene that promotes cell
growth and division. Oncogenes arise from normal genes (proto-oncogenes)
through mutations that cause them to be overactive.
Unit 2: Cardiovascular Pathophysiology (Questions 31-60)
31. Q: What is atherosclerosis? ANSWER A chronic inflammatory disease
characterized by lipid accumulation and plaque formation in arterial walls,
leading to vessel narrowing and potential thrombosis.
32. Q: What is the pathophysiology of myocardial infarction? ANSWER
Coronary artery occlusion (usually from plaque rupture and thrombus) causes
myocardial ischemia. If prolonged, irreversible cell death occurs through
coagulative necrosis.
33. Q: What is the difference between systolic and diastolic heart failure?
ANSWER Systolic heart failure involves impaired ventricular contraction with
reduced ejection fraction. Diastolic heart failure involves impaired ventricular
relaxation and filling with preserved ejection fraction.
34. Q: What is preload? ANSWER The degree of ventricular stretch at end-
diastole, determined by venous return and blood volume. It represents the load
present before contraction begins.
35. Q: What is afterload? ANSWER The resistance the ventricle must
overcome to eject blood, primarily determined by arterial blood pressure and
vascular resistance. Increased afterload increases cardiac workload.
36. Q: What is Frank-Starling mechanism? ANSWER The principle that
increased ventricular filling (preload) stretches cardiac muscle fibers, resulting
in stronger contraction and increased stroke volume, up to a physiologic limit.
VERIFIED ANSWERS (PASS GUARANTEE)
1. Q: What is the primary difference between hyperplasia and
hypertrophy? ANSWER Hyperplasia is an increase in the number of cells,
while hypertrophy is an increase in the size of existing cells. Hyperplasia can
only occur in cells capable of mitotic division.
2. Q: What are the four cardinal signs of inflammation? ANSWER Rubor
(redness), calor (heat), tumor (swelling), and dolor (pain). A fifth sign, loss of
function, is sometimes included.
3. Q: What is apoptosis and how does it differ from necrosis? ANSWER
Apoptosis is programmed cell death that is organized and energy-dependent,
producing no inflammation. Necrosis is uncontrolled cell death caused by
injury, resulting in inflammation and cellular debris.
4. Q: What is the primary function of cytokines in inflammation?
ANSWER Cytokines are signaling molecules that mediate and regulate
immunity and inflammation. They facilitate communication between cells and
coordinate the inflammatory response.
5. Q: What is metaplasia? ANSWER Metaplasia is the reversible
replacement of one differentiated cell type with another cell type, usually as an
adaptive response to chronic stress or irritation.
6. Q: What are the three stages of general adaptation syndrome?
ANSWER Alarm stage (immediate stress response), resistance stage
(adaptation to stressor), and exhaustion stage (depletion of adaptive resources if
stress continues).
7. Q: What is the difference between exudate and transudate? ANSWER
Exudate is protein-rich fluid resulting from increased vascular permeability
,during inflammation. Transudate is protein-poor fluid resulting from hydrostatic
or osmotic imbalances without inflammation.
8. Q: What are free radicals and why are they harmful? ANSWER Free
radicals are unstable molecules with unpaired electrons that can damage cellular
components including DNA, proteins, and lipids through oxidative stress.
9. Q: What is ischemia-reperfusion injury? ANSWER Paradoxical tissue
damage that occurs when blood supply returns to tissue after ischemia. The
restoration of oxygen can generate free radicals causing additional cellular
injury.
10. Q: What is the role of mast cells in inflammation? ANSWER Mast cells
release histamine and other mediators that increase vascular permeability, cause
vasodilation, and recruit other inflammatory cells to the site of injury.
11. Q: What is cachexia? ANSWER Cachexia is severe weight loss and
muscle wasting seen in chronic diseases like cancer, characterized by loss of
skeletal muscle mass that cannot be reversed by nutritional support alone.
12. Q: What is the difference between innate and adaptive immunity?
ANSWER Innate immunity is immediate, non-specific defense present from
birth. Adaptive immunity is specific, develops over time, and creates
immunologic memory.
13. Q: What is atrophy? ANSWER Atrophy is a decrease in cell size and
number, resulting in reduced tissue or organ size. It can result from disuse,
denervation, inadequate nutrition, or decreased hormonal stimulation.
14. Q: What are the five types of necrosis? ANSWER Coagulative,
liquefactive, caseous, fat, and gangrenous necrosis. Each type occurs in
different tissues and under different conditions.
15. Q: What is dysplasia? ANSWER Dysplasia is abnormal cell growth
characterized by changes in cell size, shape, and organization. It is often a
precursor to cancer but may be reversible if the causative stimulus is removed.
16. Q: What is the role of complement in immunity? ANSWER The
complement system enhances antibody and phagocyte ability to clear
pathogens, promotes inflammation, and directly attacks pathogen cell
membranes through membrane attack complex formation.
17. Q: What is oxidative stress? ANSWER An imbalance between free
radical production and antioxidant defenses, leading to cellular damage. It
,contributes to aging and various diseases including cancer and cardiovascular
disease.
18. Q: What are heat shock proteins? ANSWER Proteins produced by cells
in response to stressful conditions that help protect other proteins from damage
and assist in protein refolding and repair.
19. Q: What is cellular adaptation? ANSWER Reversible structural and
functional changes that allow cells to respond to environmental changes and
maintain viability. Examples include hypertrophy, hyperplasia, atrophy, and
metaplasia.
20. Q: What is the difference between primary and secondary intention
wound healing? ANSWER Primary intention occurs in clean wounds with
approximated edges, minimal scarring. Secondary intention occurs in wounds
with tissue loss, healing by granulation tissue formation with more scarring.
21. Q: What is granulation tissue? ANSWER New connective tissue and
microscopic blood vessels that form during wound healing, appearing pink and
granular. It fills in wounds healing by secondary intention.
22. Q: What are the phases of wound healing? ANSWER Hemostasis,
inflammation, proliferation, and remodeling. Each phase involves specific
cellular activities and timeframes.
23. Q: What is keloid formation? ANSWER Excessive scar tissue formation
that extends beyond the original wound boundaries, resulting from abnormal
collagen metabolism during healing.
24. Q: What is the role of neutrophils in acute inflammation? ANSWER
Neutrophils are first responders that phagocytose bacteria and debris, release
antimicrobial substances, and form neutrophil extracellular traps to contain
pathogens.
25. Q: What is chronic inflammation? ANSWER Prolonged inflammation
lasting weeks to years, characterized by simultaneous tissue destruction and
repair, with lymphocytes and macrophages predominating.
26. Q: What is angiogenesis? ANSWER The formation of new blood vessels
from existing vessels, essential for wound healing, tissue growth, and
unfortunately also tumor development.
27. Q: What are the hallmarks of cancer cells? ANSWER Sustained
proliferative signaling, evading growth suppressors, resisting cell death,
, enabling replicative immortality, inducing angiogenesis, and activating invasion
and metastasis.
28. Q: What is the Warburg effect? ANSWER Cancer cells preferentially
use glycolysis for energy production even in the presence of oxygen, producing
lactate rather than using more efficient oxidative phosphorylation.
29. Q: What is tumor suppressor gene function? ANSWER Tumor
suppressor genes regulate cell division, repair DNA damage, and control
apoptosis. Loss of function through mutation contributes to cancer
development.
30. Q: What is an oncogene? ANSWER A mutated gene that promotes cell
growth and division. Oncogenes arise from normal genes (proto-oncogenes)
through mutations that cause them to be overactive.
Unit 2: Cardiovascular Pathophysiology (Questions 31-60)
31. Q: What is atherosclerosis? ANSWER A chronic inflammatory disease
characterized by lipid accumulation and plaque formation in arterial walls,
leading to vessel narrowing and potential thrombosis.
32. Q: What is the pathophysiology of myocardial infarction? ANSWER
Coronary artery occlusion (usually from plaque rupture and thrombus) causes
myocardial ischemia. If prolonged, irreversible cell death occurs through
coagulative necrosis.
33. Q: What is the difference between systolic and diastolic heart failure?
ANSWER Systolic heart failure involves impaired ventricular contraction with
reduced ejection fraction. Diastolic heart failure involves impaired ventricular
relaxation and filling with preserved ejection fraction.
34. Q: What is preload? ANSWER The degree of ventricular stretch at end-
diastole, determined by venous return and blood volume. It represents the load
present before contraction begins.
35. Q: What is afterload? ANSWER The resistance the ventricle must
overcome to eject blood, primarily determined by arterial blood pressure and
vascular resistance. Increased afterload increases cardiac workload.
36. Q: What is Frank-Starling mechanism? ANSWER The principle that
increased ventricular filling (preload) stretches cardiac muscle fibers, resulting
in stronger contraction and increased stroke volume, up to a physiologic limit.
