Seasonal affective disorder (SAD) seems to be related to
a) low levels of thyroxine.
b) low levels of melatonin.
c) high levels of thyroxine.
d) high levels of melatonin.
d
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What do the results from the study of twins who served in Vietnam suggest in regard to the biological factors in the cause of PTSD?
a. Genetic factors account for little in PTSD. b. Level of exposure did not predict PTSD symptoms. c. Genetic factors were most significant in accounting for arousal/anxiety symptoms. d. Individual risk of exposure to trauma was not affected by genetic influences.
As a way of stopping her nicotine habit, Elyce is taught how to use her own personal resources and to take personal responsibility to abstain. This is ____ therapy.
A. the 12-step approach B. relapse prevention C. motivational D. cognitive-behavioral
A muscle relaxes after contracting when a. calcium is taken up by internal organelles
b. internal acetylcholine is broken apart by acetylcholinesterase. c. troponin is taken up by internal organelles. d. myosin and actin begin to interact.
In the fiber tracts of the central nervous system, you are most likely to find ________ of neurons.
A. axons B. nuclei C. dendrites D. cell bodies