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6 Cards in this Set
- Front
- Back
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Neurons
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elongated separated by gaps (synapses)
electrically active connected in a network |
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Glia
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support physical and chemical
some contain insulating myelin |
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Neutrons structure
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cell body soma
-contains nucleus dendrites -short thin projections from cell body -receive signals from other neurons Axons -long projection from cell body -sends signals to other neurons |
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Axons
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covered in myelin sheath
myelination speeds up nerve conduction - this happens over development make up white matter |
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action potential
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occurs when interior of cell temporarily reaches threshold of slightly less negatively.
ap can only happen after refractory period is over |
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what triggers action potential
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chemical activity in the synapse
-local membrane receptor proteins -slower electrical activity -modifiable Neurotransmitters -bind to sights on receptive neutron - lock and key mechanisms -cause opening closing of ion channels -changes polarisation of cell |
