review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| CNS | Brain & SC
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| PNS | everything but Brain & SC
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| Somatic NS | Skeletal muscle
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| Autonomic NS | viscera & smooth muscle
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| Sympathetic | Fight/flight
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| Parasympathetic | rest and repose
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| cns to pns | motor/efferent
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| pns to cns | sensory/afferent
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| ganglia | cluster of nerve cells
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| neuron | generates nerve impulse
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| neuroglia | glue that holds NS together
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| Cell body | main part of neuron containing nucleus
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| axon | "tail" of the neuron where impulse travels down
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| dendrite | finger-like projections
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| Synaptic end bulb | where neurotransmitters are stored
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| synaptic cleft | space between end bulb and effector
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| interneuron | CONNECTS CNS & PNS
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| Oligiodendricyte | myelinates several axons in the CNS
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| Schwann cell | myelinates on axon in the PNS
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| multipolar | most abundant neuron, multiple dendrites off of a single cell body
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| Leak channels | non-gated openings in the cell membrane that "leak" sodium and potassium, contribute to resting nerves
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| Na+/K+ pump | active transport of sodium and potassium across the cell membrane
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| depolarization | inward movement of sodium into the cell making it more positive
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| repolarization | outward movement of potassium making the cell more negative
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| hyperpolarization | cell is more negative than normal, takes a stronger impulse to stimulate
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| summation | more than one stimulus to a cell
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| temporal summation | more than one stimulus from the same source
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| depolarization | an excitatory process
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| repolarization/hyperpolarization | inhibitory process
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| absolute refractory period | gates closed/no impulse possible
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| "C" fibers | slowest nerve impulse
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| "A" fibers | fastest nerve impulses - large and myelinated
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| nodes of Ranvier | unmyelinated portion of axon where impulse jumps
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| salutory conduction | jumping from node to node
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| ligand gates | gates on cell membrane that open/close when a neurotransmitter binds to them
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| neurotransmitters | chemical transmitters that are stored in synaptic end-bulbs
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| synaptic cleft | space btw end bulb and effector
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
goodbunn