Transcript The Human Nervous System

The Human Nervous System 35-1
Name the three parts of a neuron.
Describe the way in which a nerve
impulse occurs.
Can you label a neuron?
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Cell body
Nucleus
Dendrites
Axon
Node of Ranvier
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Nucleus - Schwann cell
Schwann cell
Myelin sheath
Synaptic knob
Terminal Branches
A faster impulse – the action
potential jumps from gap to gap.
Myelin Sheath
Three types of Nerve Cells
• Sensory Neurons
• Inter Neurons
• Motor Neurons
In a synapse vesicles release
neurotransmitters which
cause the next neuron to fire.
Art and text and presentation made by:
Valerie Shiba
and
Jennifer Li
Hiya Mr. Nelson =P
Xerox 35-1
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1 e
2 i
3 d
4 n
5 g
6 l
7 j
8 a
9 j
10 m
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11 b
12 a
13 h
14 k,b
15 c
16 k
17 m
18 f
19 l
Xerox 35-1 (Cont.)
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dendrite
b
c
d
sensory
negative
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26 toward
27 node
28 neurotransmitter
29 travel to the next
neuron
• 30 the impulse would
not work
• 31 increase the speed
of the neuron
Credits
• Initial art, text and presentation made by
Valerie Shiba and Jennifer Li