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Pathophysiology Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2025/2026 Q&A | Instant Download Pdf
1. Which term describes the maintenance of a stable internal
environment?
A. Metabolism
B. Adaptation
C. Homeostasis
D. Differentiation
Answer: C. Homeostasis
Homeostasis refers to the body's ability to maintain internal balance
despite external changes.
2. Which cellular adaptation results in an increase in cell size?
A. Hyperplasia
B. Dysplasia
C. Hypertrophy
D. Metaplasia
Answer: C. Hypertrophy
Hypertrophy occurs when cells enlarge due to increased functional
demand.
3. What is the primary cause of hypoxia?
A. Increased oxygen levels
B. Reduced oxygen supply to tissues
,C. Increased carbon dioxide removal
D. Excess glucose in blood
Answer: B. Reduced oxygen supply to tissues
Hypoxia occurs when tissues do not receive adequate oxygen for
normal metabolism.
4. Apoptosis is best described as:
A. Traumatic cell death
B. Programmed cell death
C. Necrotic cell swelling
D. Accidental cell injury
Answer: B. Programmed cell death
Apoptosis is a controlled mechanism of cell elimination without
causing inflammation.
5. Which electrolyte is most important for cardiac muscle
contraction?
A. Sodium
B. Chloride
C. Calcium
D. Magnesium
Answer: C. Calcium
Calcium ions are essential for muscle contraction and cardiac
function.
6. What type of necrosis commonly occurs after myocardial
infarction?
,A. Liquefactive
B. Coagulative
C. Caseous
D. Fat
Answer: B. Coagulative
Coagulative necrosis preserves cell outlines and commonly occurs in
ischemic tissues like the heart.
7. Which process describes the movement of water across a
semipermeable membrane?
A. Diffusion
B. Active transport
C. Filtration
D. Osmosis
Answer: D. Osmosis
Osmosis involves water movement from low solute concentration to
high solute concentration.
8. Which condition results from excessive cell proliferation?
A. Atrophy
B. Hyperplasia
C. Apoptosis
D. Necrosis
Answer: B. Hyperplasia
Hyperplasia is an increase in cell number due to increased cell
division.
9. Which organ is primarily responsible for regulating acid-base
balance?
, A. Heart
B. Skin
C. Kidneys
D. Spleen
Answer: C. Kidneys
The kidneys regulate hydrogen ions and bicarbonate to maintain pH
balance.
10. Edema results primarily from:
A. Increased blood glucose
B. Excess fluid in interstitial tissues
C. Decreased sodium levels
D. Increased oxygen supply
Answer: B. Excess fluid in interstitial tissues
Edema occurs when fluid accumulates in the spaces between cells.
11. Which blood cell type is responsible for antibody production?
A. Neutrophils
B. B lymphocytes
C. Platelets
D. Eosinophils
Answer: B. B lymphocytes
B cells produce antibodies that target specific antigens.
12. What is the main function of mitochondria?
A. Protein synthesis
B. Lipid storage
Pathophysiology Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2025/2026 Q&A | Instant Download Pdf
1. Which term describes the maintenance of a stable internal
environment?
A. Metabolism
B. Adaptation
C. Homeostasis
D. Differentiation
Answer: C. Homeostasis
Homeostasis refers to the body's ability to maintain internal balance
despite external changes.
2. Which cellular adaptation results in an increase in cell size?
A. Hyperplasia
B. Dysplasia
C. Hypertrophy
D. Metaplasia
Answer: C. Hypertrophy
Hypertrophy occurs when cells enlarge due to increased functional
demand.
3. What is the primary cause of hypoxia?
A. Increased oxygen levels
B. Reduced oxygen supply to tissues
,C. Increased carbon dioxide removal
D. Excess glucose in blood
Answer: B. Reduced oxygen supply to tissues
Hypoxia occurs when tissues do not receive adequate oxygen for
normal metabolism.
4. Apoptosis is best described as:
A. Traumatic cell death
B. Programmed cell death
C. Necrotic cell swelling
D. Accidental cell injury
Answer: B. Programmed cell death
Apoptosis is a controlled mechanism of cell elimination without
causing inflammation.
5. Which electrolyte is most important for cardiac muscle
contraction?
A. Sodium
B. Chloride
C. Calcium
D. Magnesium
Answer: C. Calcium
Calcium ions are essential for muscle contraction and cardiac
function.
6. What type of necrosis commonly occurs after myocardial
infarction?
,A. Liquefactive
B. Coagulative
C. Caseous
D. Fat
Answer: B. Coagulative
Coagulative necrosis preserves cell outlines and commonly occurs in
ischemic tissues like the heart.
7. Which process describes the movement of water across a
semipermeable membrane?
A. Diffusion
B. Active transport
C. Filtration
D. Osmosis
Answer: D. Osmosis
Osmosis involves water movement from low solute concentration to
high solute concentration.
8. Which condition results from excessive cell proliferation?
A. Atrophy
B. Hyperplasia
C. Apoptosis
D. Necrosis
Answer: B. Hyperplasia
Hyperplasia is an increase in cell number due to increased cell
division.
9. Which organ is primarily responsible for regulating acid-base
balance?
, A. Heart
B. Skin
C. Kidneys
D. Spleen
Answer: C. Kidneys
The kidneys regulate hydrogen ions and bicarbonate to maintain pH
balance.
10. Edema results primarily from:
A. Increased blood glucose
B. Excess fluid in interstitial tissues
C. Decreased sodium levels
D. Increased oxygen supply
Answer: B. Excess fluid in interstitial tissues
Edema occurs when fluid accumulates in the spaces between cells.
11. Which blood cell type is responsible for antibody production?
A. Neutrophils
B. B lymphocytes
C. Platelets
D. Eosinophils
Answer: B. B lymphocytes
B cells produce antibodies that target specific antigens.
12. What is the main function of mitochondria?
A. Protein synthesis
B. Lipid storage
