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colleen colleen
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Posts: 17076
10 years ago
The transmitter _______ is secreted by the terminal buttons of preganglionic sympathetic fibers, whereas most postganglionic sympathetic fibers secrete _______.
a. norepinephrine; acetylcholine
b. glutamate; acetylcholine
c. serotonin; norepinephrine
d. acetylcholine; acetylcholine
e. acetylcholine; norepinephrine
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ThePsychicThePsychic
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10 years ago
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