MBBS Pathology 3

Question 1

Which type of infarction is characterized by pale, firm tissue without hemorrhage?

Accepted Answer

White (anemic) infarction

Answer

Red (hemorrhagic) infarction

Answer

Septic infarction

Answer

Venous infarction

Question 2

The oncogene RAS encodes a protein with what function?

Accepted Answer

GTPase signal transduction protein

Answer

Tyrosine kinase receptor

Answer

Transcription factor

Answer

Tumor suppressor

Question 3

Which of the following best describes metaplasia?

Accepted Answer

Replacement of one differentiated cell type by another

Answer

Increase in cell size

Answer

Increase in cell number

Answer

Decrease in cell size due to reduced workload

Question 4

Virchow's triad describes the three factors predisposing to thrombosis. Which of the following is NOT part of the triad?

Accepted Answer

Thrombocytopenia

Answer

Endothelial injury

Answer

Abnormal blood flow (stasis or turbulence)

Answer

Hypercoagulability

Question 5

Which type of edema is caused by increased vascular permeability due to inflammation?

Accepted Answer

Exudate

Answer

Transudate

Answer

Lymphedema

Answer

Pitting edema from hypoalbuminemia

Question 6

Kartagener syndrome is characterized by bronchiectasis, sinusitis, and situs inversus due to defect in which structure?

Accepted Answer

Microtubules in cilia (dynein arms)

Answer

Intermediate filaments

Answer

Actin microfilaments

Answer

Gap junctions