Jill Is 3 Years Old

question 192

Multiple Choice

Jill is 3 years old. She is hyperactive and learning- disabled. Her doctor suggests that Jill's problems could be the result of prenatal exposure to _____, though he stresses that the link is not straightforward at this time.

• A) chromosomal abnormalities
• B) genetic abnormalities
• C) cell differentiation
• D) behavioral teratogens

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Definitions:

Electrocardiograph (ECG)

A medical device used to record the electrical activity of the heart over a period of time.

Electrical Stimulation of the Brain (ESB)

A neuroscientific technique used to elicit a reaction from the brain by applying a controlled amount of electrical current to specific areas of the brain.

Meninges

The three layers of protective membranes—dura mater, arachnoid mater, and pia mater—surrounding the brain and spinal cord.

Myelin Sheaths

Fatty coverings around the axons of some neurons that speed up the transmission of nerve impulses.