Agents and Conditions That Harm the Prenatal Brain and Impair

question 162

Multiple Choice

Agents and conditions that harm the prenatal brain and impair learning and behavior are called _____.

• A) behavioral risks
• B) critical risks
• C) primitive streaks
• D) behavioral teratogens

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Definitions:

Lymphatic Nodule

Small accumulation of lymph tissue lacking a distinct boundary.

CD4

A glycoprotein found on the surface of immune cells such as T helper cells, monocytes, macrophages, and dendritic cells, playing a key role in the immune system’s response to pathogens.

MHC Class II

Proteins found on the surface of certain immune cells that present antigens to the immune system, critical in distinguishing between self and non-self.

MHC Class I

Molecules found on the surface of all nucleated cells that present peptide fragments to immune cells, playing a critical role in the immune response to infections.