The Likelihood of a Prenatal Defect and the Severity of the Defect

question 53

Multiple Choice

The likelihood of a prenatal defect and the severity of the defect from exposure to teratogens are generally dependent on:

• A) amount of exposure.
• B) genetic susceptibility.
• C) levels of exposure to other teratogenic agents.
• D) all of these factors.

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Definitions:

Gyrus

A ridge on the cerebral cortex; gyri are the "bumps" that can be seen on the surface of the brain.

Meningitis

An acute inflammation of the protective membranes covering the brain and spinal cord, known collectively as the meninges, which can be caused by infection with viruses, bacteria, or other microorganisms, and in some cases by certain drugs.

Convulsions

Involuntary, rapid, and uncontrollable muscle contractions often caused by electrical disruptions in the brain.

CSF

Cerebrospinal Fluid; a clear, colorless body fluid found in the brain and spinal cord, providing cushioning and maintaining a stable environment for the central nervous system.