WorksheetsQuiz on Pathogenesis and Chronic Inflammation
Total questions: 15
Worksheet time: 8mins
What is the primary role of selectins in the margination and rolling of neutrophils?
To bind to ICAM-1
To mediate transient attachment
To facilitate phagocytosis
To promote chemotaxis
Which integrins are involved in the firm adhesion of neutrophils to the endothelium?
LFA-1 and Mac-1
E-selectin and P-selectin
PECAM-1 and CD31
C5a and IL-8
What triggers the emigration of neutrophils into tissues during inflammation?
Cytokine release
PECAM-1 interactions
Chemotactic factors
Rolling along the endothelium
How do neutrophils migrate toward the site of injury?
Through blood flow
Along a chemical gradient
By adhering to platelets
By random movement
What is a key characteristic of chronic inflammation compared to acute inflammation?
Immediate resolution
Short duration
Rapid onset
Persistent inflammatory response
Which cells primarily dominate chronic inflammation?
Neutrophils
Macrophages and lymphocytes
Eosinophils
Basophils
What is a common clinical feature of chronic inflammation?
Subtle symptoms like fatigue
Acute pain
Swelling
Fever
What is the fundamental reason for the chronicity of inflammation?
Immediate immune response
Rapid healing processes
Increased blood flow
Failure to eliminate the causative agent
What is the role of amyloid fibrils in tissues?
Enhancing tissue function
Reducing inflammation
Disrupting normal tissue structure
Promoting healing
Which of the following is a trigger for protein misfolding in amyloidosis?
Genetic mutations
Increased blood flow
High oxygen levels
Decreased protein synthesis
What is the main structural feature of amyloid fibrils?
Alpha-helices
Random coil structures
Stacked β-pleated sheets
Single polypeptide chains
What histological dye is used to identify amyloid fibrils?
Congo red
Eosin
Hematoxylin
Giemsa stain
What is the consequence of amyloid fibril deposition in tissues?
Increased tissue regeneration
Decreased oxidative stress
Organ dysfunction
Enhanced immune response
What is the effect of reactive oxygen species in the context of amyloidosis?
Reducing inflammation
Enhancing blood flow
Inducing apoptosis
Promoting protein synthesis
Which of the following best describes granuloma formation in chronic inflammation?
A type of fibrosis
A sign of acute inflammation
An organized collection of macrophages and lymphocytes
A collection of neutrophils
