Item #3 of 10

The synthesis of neurotransmitters may be affected by _______________.

		providing more of the substances used to produce a neurotransmitter;
		blocking an enzyme that catalyzes the production of a neurotransmitter;
		affecting the autoreceptors located on the dendrites of a neuron;
		all of the alternatives above are correct;
		none of the alternatives above is correct;

CORRECT - Yes, the synthesis of neurotransmitters may be affected via a number of mechanisms, including providing more precursors, blocking enzymes that speed up synthesis, and either blocking or facilitating autoreceptors.

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