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
Formation of an atherosclerotic plaque within a coronary artery; may lead to coronary artery disease
Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I
Leukemia. A blood smear from a patient suffering from leukemia demonstrates the abundance of enlarge
Centers for disease control and prevention guidelines
The skullcap from Trinil, Java is the type specimen for H. erectus and is about 900,000 years old.
Bovine Spongiform Encephalopathy and Creutzfeldt-Jakob Disease