Although brain-imaging techniques have been useful for diagnosing the severity of neural destruction in Alzheimer's patients, it has not yet proved useful in discriminating the early stages

Communication throughout the nervous system is controlled by

A) neurons. B) the neural tube. C) the frontal lobes. D) the brain stem.

Which ethnic group in the United States has the lowest reported rate of child maltreatment?

A) Hispanic B) African American C) Caucasian D) Asian