Examlex
Which of the following structures of the human heart contains oxygen-rich blood?
Excitatory Neurotransmitter
A type of neurotransmitter that promotes the generation of an electrical signal called an action potential in receiving neurons.
Serotonin Transporter
A protein that facilitates the reuptake of serotonin from the synaptic cleft back into the presynaptic neuron.
Neuromodulator
A type of chemical messenger released from neurons in the brain to signal other neurons, modifying their activities and influencing many bodily functions.
Synaptic Cleft
The small gap at the synapse between neurons, through which neurotransmitters are sent to communicate signals.
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