How Is the Development of Autoimmunity Normally Prevented

question 59

Multiple Choice

How is the development of autoimmunity normally prevented?

• A) Regulatory T cells suppress autoimmune responses.
• B) T lymphocytes require a specific set of cytokine signals to become activated.
• C) Clonal deletion of T cells, lack of necessary cytokine signals, and regulatory T cell suppression prevent activation of autoreactive T cells.
• D) Clonal deletion of T cells and regulatory T cell suppression prevent autoreactive T cell activation.
• E) T lymphocytes that respond to autoantigens in the thymus undergo clonal deletion.

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Definitions:

Widens Airways

Refers to the process or action that increases the diameter of respiratory airways, improving air flow to and from the lungs.

Peripheral Nervous

Part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.

Emotion

A complex psychological state that involves an experiential, physiological, and behavioral response to a stimulus.

Reflexive Responses

Automatic reactions to certain stimuli that do not involve conscious thought.