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The Neuron

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Bianca Jean Phillipe

on 23 September 2013

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Transcript of The Neuron

Bianca Jean Phillipe| Teiheim Edwards| Jonathan Lemus
The
Neuron
Parts of the Neuron

Dendrite
Main Function:
To
receive messages and conduct impulses to the main cell
body.
Cell Body
Main Function:
Serve
as cell's "life- support" center
Myelin Sheath
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.
In re
sponse to the electrical impulses generated by the action potential, the vesicles which
hold
the neurotransmitters are sent to the end of the axon. The neurotransmitters cause a
seri
es of reactions within the cell to produce the same kind of impulse generated from the
pre
vious cell. The neurotransmitters then are unbound from receptors and can either be
dis
solved by enzymes or processed back to the original neuron through reuptake.
Axon
A long slender extension of the neuron that
conducts
electrical impulses away from the neuron's cell body or soma.
Neurotransmitter
Types of Neurons
Terminal Branc
h
This part makes syna
ptic
contacts with other nerve cells or with effector cells
Send information between motor and
sensory neurons.
Carry
signals from the outer part of your body into the central nervous system.
Send signals
from the central nervous system to the outer parts of the
body
. This doesn’t
in
clude just muscles but glands, skin cells, organs, and so forth.
Interneuron
Sensory Neurons:
Motor
Neurons
Co
mputation
Ne
uron
The
computation neuron
is

take in information,

process and analyze it. They

com
pare it to
information
within the mem
ory

and thus plan,

and execute behavior in

response.
Examples of Neurotransmitters
Action Potential
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
Full transcript