L-dopa's efficacy in the treatment of Parkinson's disease decreases after a few years of treatment because
a. as the patient gets older plasma concentrations may increase too fast and produce motor disturbances and adverse psychic effects
b. as the patient gets older plasma concentrations may fall too quickly, allowing the disease symptoms to suddenly appear
c. of continued progression of the underlying cause of the disease
d. all of the above
Question 2
In normal adult humans, alertness, decreased fatigue, improved ability to concentrate, and elevated mood are likely to be observed following administration of low doses of
a. amphetamine
b. cocaine
c. nicotine
d. all of these
Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of
Liver Disease
Classification of Ismchmic heart disease
Review Cognitive Changes over the Adult Years
Endocrine Disorders and Their Drug Treatment
Crown gall disease caused by Agrobacterium via plant transformation