True or False:
For most nervous system disorders, genetic contributions only partially account for which invidivuals are affected. the other significant contribution to disease comes from environmental facotrs. Unfortunaltey, environmental contributions are typically very difficult to identify.
true
To distinguish between genetic and environmental variables, scientists often carry out __.
family studies
1% of the world's population suffer from __, a severe mental disturbane characterized by psychotic episodes in which patients have a distorted perception of reality. They typically suffer form hallucinateions and delusions. It refers to the fragmentation of what are normally integrated brain functions.
schizophrenia
Two lines of evidence sugget that __ affects neuronal athways that use __ as a neurotransmitter. FIrst, the drug __ which stimultes dopamine release, cna produce the same set of symptoms as __. Second, many of the drugs that elleiviate the symptoms of __ blockk __ receptors. __ may also alter glutamete signaling, since the street drug "angel dust" or PCP blocks glutamete receptors and induces strong __-liek symptoms.
schizophrenia
dopamine
amphetamine
schizophrenia x2
dopamine
schizophrenia x2
__ is a disorder characterized by depressed mood, as well as abnormalities in sleep, appeptie and energy leve. Two broad forms of depressive illness are known: __ and __.
depression
major depressive disorder
bipolar disorder
Individuals affected by __ undergo periods- oftenlasting many months- during which once enjoyable activies provide no pleasure or provoke no interest. One of the most common nNS disorders, this affects about one in every seven adults at some point, and twice as many women as men.
major depressive disorder
__, or manic-depressive disorder, involves swings of mood from high to low and affects about 1% of the world's pop. Like schizophrenia, __ and major depression have genetic environmenta
