nerve impulse

noun

Definition of nerve impulse

:the progressive physicochemical change in the membrane of a nerve fiber that follows stimulation and serves to transmit a record of sensation from a receptor or an instruction to act to an effector called also nervous impulse

First Known Use of nerve impulse

1870


NERVE IMPULSE Defined for Kids

nerve impulse

noun

Definition of nerve impulse for Students

:an electrical signal carried by nerve cells which relays information from the body's sense organs to the brain and spinal cord or instructions from the brain and spinal cord to a body part (as a muscle or gland)

Medical Dictionary

nerve impulse

noun
variants: also nervous impulse

medical Definition of nerve impulse

:an electrical signal that travels along a nerve fiber in response to a stimulus and serves to transmit a record of sensation from a receptor or an instruction to act to an effector :the propagation of an action potential along the length of a neuron
Note: A nerve impulse occurs when a stimulus exceeds a certain threshold resulting in the movement of positively charged sodium ions across the cell membrane of a neuron so that the electrical charges inside and outside the membrane are temporarily reversed.

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