impulse

Vestibular system

...e, forms the physiological basis ofthe Rapid head impulse test or Halmagyi-Curthoys-test : when the function of your right balance system reduced by a disease or by an accident, quick head movements to the right cannot be sensed properly any more. As a consequence, no compensatory eye movements are genera...

Synapse

...transmitter is triggered by the arrival of a nerve impulse (or action potential ) and occurs through an unus...kly synapse on a single cell, they may initiate an impulse in that cell even though the synapses are weak. On the other hand, a pre-synaptic neuron releasing a...

Receptor

...ironmental stimuli, produces an informative nerve impulse . In biochemistry , a receptor is a protein molecule that receives and responds to a specific neurotransmitter , hormone , or other substance. In immunology , a receptor is the region of an antibody which shows recognition of an antig...

Neurotransmitter

.... That is, they may help the initiation of a nerve impulse in the receiving neuron, or they may discourage such an impulse, by modifying the local membrane voltage potential. In the central nervous system, combined input from several synapses is usually required to trigger an action potential. Glutamate is...

Ion channel

...cause "voltage-gated" channels underlie the nerve impulse and because "transmitter-gated" channels mediate conduction across the synapses , channels are especially prominent components of the nervous system . Indeed, most of the offensive and defensive toxins that organisms have evolved for shutting down...

Axon

...s, enabling an especially rapid mode of electrical impulse propagation called saltation . The axons of som...form axon collaterals , along which the bifurcated impulse travels simultaneously to signal more than one other cell. History Some of the first intracellul...