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21 Cards in this Set
- Front
- Back
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Neuron |
A cell that communicates information in electrical and chemical form |
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Cell Body or Soma |
Contains the nucleus |
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Dendrite |
Many fibers extending from the cell body to receive information from other neurons. |
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Axon |
Long, fluid filled tube that carries neuron's messages to other neurons. Some have myelin, others without-nodes of Ranvier. |
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Glial Cells |
1. Provides structural support 2. Provide nutrition 3. Enhance the speed of communication (produces myelin sheath) 4. Removes Waste |
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Type of neurons 1.Sensory |
brings information to the the central system from senses, skin and internal organs |
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Types of neurons 2. Motor |
Takes information from the central nervous system to the muscles and glands |
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Types of neurons 3. Inter-neurons |
Neurons in the brain and spinal cord responsible for processing information related to sensory and motor output. |
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Communication within the neuron |
There has to be enough stimulation from the environment to activate the neuron. |
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Stimulus Thereshold |
This minimum level of stimulation from other neurons or sensory receptors to activate it. |
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Action Potential |
When enough stimulation has occurred, the neuron will activate sending a nervous impulse through the neuron |
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All or nothing law |
The neuron either activates or it doesn't. |
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Re-factory Period |
The time it takes for these ions to get back to the original state. |
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Depolarized |
Activated neuron |
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Vacules (sacs) |
That contains neurotransmitters |
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Reuptake |
Neurotransmitters go back in to the vesicles again |
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Neurotransmitters |
makes your ability to think, perceive, feel, move, act and react depends on the delicate balance |
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Synapse |
The communication between two neurons. |
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Pre-Synapse |
Neuron before the synapse |
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Post-Synapse |
Neuron after the synapse |
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Synapse Gap |
The tiny gap space between the axon terminal of one neuron and the dendrite of an adjoining neuron. |
