axon hillock
n. The roughly conical bump on a nerve cell body from which the axon extends. Nerve impulses begin with a depolarization of the axon hillock, which, when it reaches a critical threshold, begins a wave of depolarization along the axon.
n. The roughly conical bump on a nerve cell body from which the axon extends. Nerve impulses begin with a depolarization of the axon hillock, which, when it reaches a critical threshold, begins a wave of depolarization along the axon.
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