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Transcript of The Neuron
Parts of the Neuron
receive messages and conduct impulses to the main cell
as cell's "life- support" center
Main Function: To speed up the operation of the neuron. Normally the speed relies on the size of the neuron, but the fatty tissue that covers the myelin sheath prevents the dissipation of the action potential.
sponse to the electrical impulses generated by the action potential, the vesicles which
the neurotransmitters are sent to the end of the axon. The neurotransmitters cause a
es of reactions within the cell to produce the same kind of impulse generated from the
vious cell. The neurotransmitters then are unbound from receptors and can either be
solved by enzymes or processed back to the original neuron through reuptake.
A long slender extension of the neuron that
electrical impulses away from the neuron's cell body or soma.
Types of Neurons
This part makes syna
contacts with other nerve cells or with effector cells
Send information between motor and
signals from the outer part of your body into the central nervous system.
from the central nervous system to the outer parts of the
. This doesn’t
clude just muscles but glands, skin cells, organs, and so forth.
take in information,
process and analyze it. They
pare it to
within the mem
and thus plan,
and execute behavior in
Examples of Neurotransmitters
This is the energy required to open and close the “gates” for sodium and potassium ions. When the Sodium gate is opened it allows an influx of sodium ion within the already slightly negative cell, resulting in depolarization of the cell. This in consequence opens the Potassium gate which allows the
Potassium out. Which depolarizes the cell once more causing the next Sodium gate to open. The cycle repeats down the axon. It doesn’t wave in all directions due to the refractory period experienced by the gates.
Types of Neurons