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paigepennellop.4

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paige pennello

on 21 October 2016

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Transcript of paigepennellop.4



Neuroscience
The Neuron and the Brain

Dendrite: Recieves messages from axons



Nucleus: where the DNA is located



Impulse:
(One Excitatory, One Inhibitory)

Axon: sends messages to the dendrites



Neural Impulse: action potiental


Myelin Sheath: insulates the axon. Makes the travel faster



Synapse with Muscle: the axon branch is making a synapse with muscle fiber


Muscle: muscle fiber


Cell Body:The control center for the neuron Organals are located



Neuron Structure, Scale, Function
Conduction of Impulse
All or nothing: a neuron that sends a signal or it doesn't

Refractory Period: a time period during which the neuron can not fire again, Has to recharge membranes before sending them out again

One Direction: the direction the neuron travels. Top to bottom. From the dendrite end to the axon

Impulse: Excitatory vs. Inhibitory: Excitatory makes the neurons fire more often. Inhibitory slows or stops them

Opposing Tendencies: Two factors that opperate opoition to each other

Speed of impulse:

Demo: Hand to Shoulder, Both Hands

+
-

Perkinje Nerve Cell
in Cortex of the Brain

Fight or Flight Response
Relaxation Response
Full transcript