What initially causes a nerve impulse?

What initially causes a nerve impulse? launch of enzymes out of the neuron motion of chemical substances into the dendrites of the neuron pathogens attacking the dendrites of the neuron purple blood cells bathing the neuron

Reply 1

Reply is B) The motion of chemical substances into the dendrites of the neuron causes a nerve impulse.

Reply 2

Nerve impulses are brought on by Potassium (Okay+) and Sodium (Na+) ions which can be positioned inside and outdoors of the cell. The construction of the cell membrane is permeable to Potassium however are extremely impermeable to Sodium ions. These impulses are transmitted from one nerve cell to the opposite in very quick collection.

Reply 3

The nerve impulse is a wave of depolarization touring alongside the axon of the motor nerve such that the resting membrane potential of about −70 millivolt is reversed, turning into briefly constructive. On the nerve terminal, the nerve impulse causes voltage-gated calcium channels on the lively zones

Reply 4

^^ and likewise the second reply, chemical substances shifting into the dendrites

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