What Mechanism Occurs in Raynaud Phenomenon That Classify It as a Type

question 15

Multiple Choice

What mechanism occurs in Raynaud phenomenon that classify it as a type III hypersensitivity reaction?

• A) Immune complexes are deposited in capillary beds blocking circulation.
• B) Mast cells bind to specific endothelial receptors that cause them to degranulate creating a localized inflammatory reaction that occludes capillary circulation.
• C) Cytotoxic T lymphocytes attack and destroy the capillaries so that they are unable to perfuse local tissues.
• D) Antibodies detect the capillaries as foreign protein and destroy them using lysosomal enzymes and toxic oxygen species.

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Definitions:

Demand Curve

A graphic representation showing how the quantity demanded of a good or service varies with its price.

Marginal Cost

The hike in complete costing that comes with the fabrication of an additional unit of a good or service.

Competitive Buyer

A buyer in a market who cannot influence the market price and takes the price as given.

Marginal Expenditure

The rise in expense from obtaining one more unit of a good or service.