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

question 28

Multiple Choice

What mechanism occurs in Raynaud phenomenon that classifies 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.

---

Definitions:

Credit Card

A payment card issued to users as a method of payment allowing the cardholder to borrow funds, typically at point of sale, under the condition of paying back the borrowed money plus interest.

Inventory Period

The average time it takes for a company's inventory to be sold and replaced.

Cash Cycle

The duration of time it takes for a company to convert its investments in inventory and other resources into cash flows from sales.

Credit Sales

Transactions where goods or services are sold by a company with payment to be received at a later date.