Question

How does an impulse travel through a neuron, what exactly is happening

Answer 1

Hello mate.

Thanks for asking this question.

your answer is =>


The impulse is an electrochemical signal transported from one neuron to another by the means of special types of Mechanisms through the Synapse.

These mechanisms are=>

1) $\underline{\bf{Deformation\: mechanism}}$ =>

the Sodium ions are impermeable to the cell membrane of neural cytoplasm. These Sodium ions are accumulated around the neural Cytoplasm.

Some Neuro transporting hormones are present in the neuron which prepares a concentration gradient and thus by the means of Diffusion , the sodium ions enter the neural Cytoplasm.

As , the neuron cell works on radically negative charge , the positive charged sodium ions defect the metabolic activities of neuron.

To reduce this effect , the neuron undergoes Reformation mechanism.


2)$\underline{\bf{Reformation\: mechanism}}$ =>

During the reformation mechanism , the accumulated Sodium ions are made less effective as the concentration of Potassium ions in the neuron is decreased by removing them out of the cell.

this mechanism is based on the effectiveness of transporatary hormones.

# The Sodium ions enter the cell. this is also called as $\bf{INFLUX}$ of Sodium ions.

# Potassium ions removed from neuron , this process is also called as $\bf{EFLUX}$ of potassium ions.

During these two mechanisms , the potential difference is created , due to this , an Electrochemical impulse is generated in neuron which then transported from Dendron to Axons and this process is continued.

This transport of impulse is hence $\bf{Unidirectional}.$



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