neuron - highly specialized cell that transmits electrical impulses

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Neuron- highly specialized cell that transmits electrical impulses Stephen M. Fowler

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Neuron - highly specialized cell that transmits electrical impulses. Stephen M. Fowler. Nervous System. Central Nervous System (CNS)- brain and spinal chord Peripheral Nervous System (PNS)- all nerves extending from and going to the CNS Composed of over 100 billion neurons. - PowerPoint PPT Presentation

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Page 1: Neuron - highly specialized cell that transmits electrical impulses

Neuron- highly specialized cell that transmits electrical impulses

Stephen M. Fowler

http://www.rainbowstudios.com/people/thewave/gallery/midrez/Neuron.jpg

Page 2: Neuron - highly specialized cell that transmits electrical impulses

Nervous System

Central Nervous System (CNS)- brain and spinal chord

Peripheral Nervous System (PNS)- all nerves extending from and going to the CNS

Composed of over 100 billion neurons

Page 3: Neuron - highly specialized cell that transmits electrical impulses

Elements of a Neuron

Page 4: Neuron - highly specialized cell that transmits electrical impulses

Neurotransmitters

Are required along with vesicles to transmit a nerve impulse from one neuron to another over the synapse.

Page 5: Neuron - highly specialized cell that transmits electrical impulses

Classes of Neurons

Afferent- do not have dendrites: transmit impulses from specialized structures to the Central Nervous System

Efferent- conduct electrical signals from the CNS to muscle or glad cells

Inter- reside entirely within the CNS and make up about 99% of all neurons

Page 6: Neuron - highly specialized cell that transmits electrical impulses

Neuroscience Terminology

Nerve- bundle of axons in the PNS Pathway- bundle of axons in the CNS Commissure- a collection of nerve fibers linking

the left and right halves of the CNS Nuclei- cell bodies linked together in the CNS Ganglia- cell bodies linked together in the PNS

Page 7: Neuron - highly specialized cell that transmits electrical impulses

References

Pasternak http://en.wikipedia.org/wiki/Main_Page http://psych.athabascau.ca/html/Psych402/Biotutorials/2/myelin.shtml

http://en.wikipedia.org/wiki/Main_Page

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