The amount of levodopa that crosses the blood-brain barrier is __________ percent.
A) 1 to 5
B) 20 to 30
C) 50 to 60
D) 80 to 90
Correct Answer:
Verified
Q30: Selegiline ameliorates symptoms of parkinsonism through a
Q31: Carbidopa works by inhibiting the breakdown of
Q32: Tolcapone and entacapone,the two main COMT-inhibitory drugs:
A)inhibit
Q33: A major limitation of present-day,long-term drug therapy
Q34: MAO-A is associated with _ neurons; MAO-B
Q36: The precursor of levodopa is:
A)dopamine.
B)dopa decarboxylase.
C)tyramine.
D)tyrosine.
Q37: All of the following treatments ameliorate parkinsonism
Q38: Levodopa therapy will typically be effective in
Q39: All of the following are standard treatment
Q40: The enzyme _ converts tyrosine into dopa
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