Pathology MCQs
Pathology MCQs are designed to test a student's understanding of disease mechanisms, histopathology, and clinical correlations. Questions range from general pathology to systemic diseases affecting organs like the liver, lungs, heart, and kidneys. Ideal for MDCAT, NTS, USMLE, and FCPS aspirants, these quizzes help reinforce critical concepts and bridge the gap between theory and clinical application.
Q: Ischemia leads to cell injury by reducing
A) Protein production
B) Oxygen supply
C) Hormonal response
D) DNA content
✅ Correct Answer: B
Explanation: Reduced blood flow causes oxygen deprivation, impairing cellular metabolism.
Q: Liquefactive necrosis commonly occurs in
A) Brain tissue
B) Muscle fibers
C) Skin layers
D) Cartilage
✅ Correct Answer: A
Explanation: Brain infarctions result in liquefactive necrosis due to high enzymatic activity.
Q: Inflammatory exudate contains
A) Platelet clusters
B) Erythrocytes
C) Only plasma
D) Proteins and leukocytes
✅ Correct Answer: D
Explanation: Exudate is rich in protein and white blood cells, distinguishing it from transudate.
Q: The most abundant cell in acute inflammation is
A) Basophil
B) Neutrophil
C) Macrophage
D) Eosinophil
✅ Correct Answer: B
Explanation: Neutrophils are the first responders to sites of acute injury or infection.
Q: Chemotaxis allows immune cells to
A) Destroy antigens
B) Divide rapidly
C) Change identity
D) Move toward injury
✅ Correct Answer: D
Explanation: Chemotaxis directs leukocyte migration along chemical gradients toward inflammation.
Q: Eosinophils are particularly active during
A) Bacterial fevers
B) Viral infections
C) Ischemic attacks
D) Parasitic infections
✅ Correct Answer: D
Explanation: Eosinophils combat parasites and contribute to allergic responses.
Q: The key enzyme in apoptosis is
A) Lipase
B) Caspase
C) Amylase
D) Peptidase
✅ Correct Answer: B
Explanation: Caspases orchestrate the cascade of events leading to programmed cell death.
Q: Dystrophic calcification occurs in
A) Damaged tissues
B) Immune organs
C) Red marrow
D) Healthy bone
✅ Correct Answer: A
Explanation: Calcium deposits form in necrotic or damaged tissues despite normal serum calcium levels.
Q: The primary function of histamine during inflammation is
A) Phagocytosis
B) Vasodilation
C) Platelet formation
D) DNA repair
✅ Correct Answer: B
Explanation: Histamine increases vascular permeability and dilates blood vessels.
Q: A karyolysis stage in necrosis reflects
A) Shrunken cytoplasm
B) Fragmented mitochondria
C) Enlarged nucleolus
D) Fading nucleus
✅ Correct Answer: D
Explanation: Karyolysis represents nuclear dissolution due to enzymatic degradation.