Neurons Stephen Richards

Сентябрь 3, 2022

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Neurons Stephen Richards

Содержание

2. Nervous System Central Nervous System (CNS)- brain and spinal chord Peripheral Nervous System (PNS)- all nerves
3. Elements of a Neuron
4. Neurotransmitters Are required along with vesicles to transmit a nerve impulse from one neuron to another
5. Classes of Neurons Afferent- do not have dendrites: transmit impulses from specialized structures to the Central
6. Neuroscience Terminology Nerve- bundle of axons in the PNS Pathway- bundle of axons in the CNS
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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

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Elements of a Neuron

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Neurotransmitters
Are required along with vesicles to transmit a nerve impulse from

one neuron to another over the synapse.

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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

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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