When an Antigen-Presenting Cell Interacts Successfully with a Helper T

question 72

Multiple Choice

When an antigen-presenting cell interacts successfully with a helper T cell, the antigen-presenting cell secretes a signal molecule that assists in the activation of the helper T cell. This signal molecule is

• A)interferon.
• B)complement.
• C)interleukin-1.
• D)perforin.

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Definitions:

Directional Terminology

A set of terms used to describe the relative locations of parts of the body in relation to each other.

Caudal

Pertaining to the tail or posterior part of the body, often used to describe direction in anatomy.

Proximal

Situated nearer to the center of the body or the point of attachment.

Inguinal Region

The area of the lower abdomen, located just above the groin, where the thighs meet the torso.