| / English Dictionary |
NERVE IMPULSE
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The electrical discharge that travels along a nerve fiber
Example:
they demonstrated the transmission of impulses from the cortex to the hypothalamus
Synonyms:
impulse; nerve impulse; nervous impulse; neural impulse
Classified under:
Hypernyms ("nerve impulse" is a kind of...):
electrical discharge (a discharge of electricity)
Hyponyms (each of the following is a kind of "nerve impulse"):
action potential (the local voltage change across the cell wall as a nerve impulse is transmitted)
Context examples:
This leads to a blockage of nerve impulse conduction and results in a loss of sensation.
(Mepivacaine Hydrochloride, NCI Thesaurus)
Although the mechanism of action has not been fully elucidated, orphenadrine citrate appears to block cholinergic receptors, thereby interfering with the transmission of nerve impulses from the spinal cord to the muscles.
(Orphenadrine Citrate, NCI Thesaurus)
This slows nerve impulses in the heart and stabilizes the heartbeat.
(Mexiletine, NCI Thesaurus)
By stabilizing neuronal membranes, cocaine inhibits the initiation and conduction of nerve impulses and produces a reversible loss of sensation.
(Cocaine, NCI Thesaurus)
Depolarization of the neuronal membrane is inhibited, thereby blocking the initiation and conduction of nerve impulses.
(Benzocaine, NCI Thesaurus)
At the injection site, chloroprocaine hydrochloride acts by inhibiting sodium influx through binding to specific membrane sodium ion channels in the neuronal cell membranes, restricting sodium permeability, and blocking nerve impulse conduction.
(Chloroprocaine Hydrochloride, NCI Thesaurus)
Levobupivacaine reversibly binds voltage-gated sodium channels to modulate ionic flux and prevent the initiation and transmission of nerve impulses (stabilizing neuronal membrane), thereby resulting in analgesia and anesthesia.
(Levobupivacaine Hydrochloride, NCI Thesaurus)
This structure acts as an electrical insulator that allows nerve impulses to travel faster by increasing the resistance and decreasing the capacitance over that found in unmyelinated nerve fibers.
(Myelin Sheath, NCI Thesaurus)
Articaine hydrochloride reversibly blocks nerve impulse conduction by binding to specific membrane sodium ion channels thereby interfering with the electrical excitation in the nerve, slowing the propagation of the nerve impulse and reducing the rate of rise of the action potential.
(Articaine Hydrochloride, NCI Thesaurus)
Bupivicaine reversibly binds to specific sodium ion channels in the neuronal membrane, resulting in a decrease in the voltage-dependent membrane permeability to sodium ions and membrane stabilization; inhibition of depolarization and nerve impulse conduction; and a reversible loss of sensation.
(Bupivacaine, NCI Thesaurus)
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