MCAT Question of the Day
    •

    Q:

    		 A neurotransmitter is found that is released to a secondary neuron with the downstream effects of causing muscle contraction. This neurotransmitter is also found to be involved in a negative feedback pathway. On which structure does this neurotransmitter likely act as part of this feedback pathway?
    		 

    A

    		 Post-synaptic neuron

    B

    		 Pre-synaptic neuron

    C

    		 Within the synapse

    D

    		 Directly on the muscle



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