Examlex
In the United States, the soil order occupying the most area is the ________.
Transporter Proteins
Proteins that move molecules across cell membranes, playing critical roles in nutrient uptake, neurotransmitter clearance, and waste removal.
Presynaptic Axon
The part of an axon that is situated at the presynaptic side of a synapse, responsible for releasing neurotransmitters.
Neurotransmitter
A chemical substance that transmits signals across a synapse from one neuron to another in the brain and nervous system.
Reuptake
Inactivation of a neurotransmitter when membrane transporter proteins bring the transmitter back into the presynaptic axon terminal for reuse.
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