What Is the Mechanism in Type IV Hypersensitivity Reactions

question 4

Multiple Choice

What is the mechanism in type IV hypersensitivity reactions?

• A) Antibodies coat mast cells by binding to receptors that signal its degranulation followed by discharge of preformed mediators.
• B) Antibodies bind to soluble antigens that were released into body fluids and the immune complexes are deposited in the tissues.
• C) Cytotoxic T lymphocytes or lymphokines-producing Th1 cells attack and destroy cellular targets directly.
• D) Antibodies bind to the antigen on the cell surface.

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Definitions:

Programmed Decisions

Decisions that are routine and repetitive, often made using predetermined rules and procedures.

False Consensus Effect

A cognitive bias whereby individuals overestimate the extent to which their beliefs, feelings, or behaviors are shared by others.

Innovation Process

A sequence of actions involving the creation, advancement, and execution of novel concepts or items.

Heuristics

Simple, efficient rules, either hard-coded by evolutionary processes or learned, that help in making decisions, forming judgments, or solving problems.