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Frequently Asked Questions

How do nerve impulses travel through the body?

Nerve Impulses. These nerves send signals between the brain, spinal cord, and other body organs via nerve impulses. Nerve impulses, or action potentials, are electrochemical impulses that cause neurons to release electrical or chemical signals that initiate an action potential in another neuron.

What is conduction of nerve impulse?

Conduction of Nerve Impulse. A nerve impulse is the electric signals that pass along the dendrites to generate a nerve impulse or an action potential. An action potential is the movement of ions in and out of the cell. It specifically involves sodium and potassium ions.

What is the voltage of a nerve impulse?

The nerve fibres are either depolarized or they are said to be in the action potential. The action potential travelling along the membrane is called the nerve impulse. It is around + 30 mV.

What are the events that occur during nerve impulse transmission?

Gated channels open in response to neurotransmitters, changes in membrane potential, or other stimuli. The following events characterize the transmission of a nerve impulse (see Figure 1): Resting potential. The resting potential describes the unstimulated, polarized state of a neuron (at about –70 millivolts). Graded potential.

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