The politics of identity is a kind of cultural politics. It relies on the development of a culture that is able to create new and affirmative conceptions of the self, to articulate collective identities, and to forge a sense of group loyalty.
Neurons transmit electrical impulses by allowing the passage of charged ions across their membranes in response to stimuli, changing the charge of the neuron in a process that propagates through the axon of the neuron. Normally, neurons maintain an internal negative charge relative to their environment by excluding sodium ions from their cytoplasm.
function of neurotransmitter is to chemically transmit nerve impulse from one nerve cell to the next. why destroyed - so that action of neurotransmitter isn't constant, and allows the target neuron to rest. Most are NOT destroyed but are re-absorbed by the cell that released it.