What occurs within in a nerve cell to generate an impulse?

Question

help, please!

Answer 1

An impulse is an action potential. In this, depolarization causes the opening of voltage-gated sodium channels, so Na rushes into the cell. This diffuses along the axon, causing depolarization in these later sections, again firing an action potential (AP). When the AP reaches the axon terminal, the electrical signal (caused by the movement of the charged Na ions) is changed into a chemical signal (a neurotransmitter), which diffuses across the synaptic cleft to the postsynaptic cell or target organ.

Answer 2

It develops "saltatory currents", that is, the impulse travels along the nerve from 3 meters per second to 42 meters in the fastest, depolarizmg the spaces between the cells of Schwann, or myelin cells covering the nerves, caller "Ranvier spaces" by introducing sodium from the extracellular fluid, and expelling potaassium through specialized channels, in a matter of milliseconds, and reversiung it, milliseconds after....this depolarization, advances with a "head" and a "tail" toward the end or effector organ......the so called saltatory conduction, for time and energy in ATP economy...

Answer 3

the nerve impulse is received into the axon and travels out the dendrite where it jumps the synaps with the help of neurotransmitters. This is probably not specific enough for you, sorry.

Answer 4

it's a chemical reaction in the dendrites(i think they are called so in English, too) which are filled with some substances at their ends. this reaction generates the impulse when the bubbles filled with the substance burst