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voltage-gated ion channel

an ion channel that opens or closes in response to the voltage difference across the membrane, such as the voltage-gated sodium (Na+) channel that mediates the action potential. Also called voltage-activated gate. Compare ligand-gated ion channel.

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Psychology term of the day

May 8th 2024

ontogeny

ontogeny

n. the biological origin and development of an individual organism from fertilization of the egg cell until death. Also called ontogenesis. Compare phylogeny. See also recapitulation theory. —ontogenetic adj.