Study Guide
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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show | Small, brief, local changes in membrane potential that act as short distance signals. The current produced dissipates w/ distance
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show | brain and spinal cord
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____ is a disease that gradually destroys the myelin sheths of neurons in the CNS, particularly in young adults | show 🗑
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show | cranial and spinal nerves
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show | One neuron stmulates the next in sequence, producing specific, predictable responses, as in spinal reflexes.
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Neurons may be classified according to several characteristics. What are the different groups and what is characteristic of each? | show 🗑
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action potential | show 🗑
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Depolarization | show 🗑
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show | period following stimulation during which no additional action potential can be evoked
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show | follows the absolute refractory period, intercal when a threshold for action potential stimulation is markedly elevated.
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show | movement of the membrane potential to the initial resting (polarized) state.
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norepinephrine | show 🗑
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What are special characteristics of neurons? | show 🗑
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Ependymal celss function to | show 🗑
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An impulse from one nerve cell is communicated to another nerbe cell via the | show 🗑
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show | neurilemma
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the part of a neuron that conducts impulses away from its cell body is called an | show 🗑
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Collections of nerve cell bodies outside the CNS are called | show 🗑
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show | association neuron
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receptive region | show 🗑
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trigger zone | show 🗑
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show | a circular circuit that returns a signal to its source
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converging circuit | show 🗑
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show | signs from one neuron sent out to many others
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Substance P | show 🗑
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show | the refractory period
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show | lower
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That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles in the ______nervous system | show 🗑
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show | node of Ranvier
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The synapse more common in embryonic nervous tissue than in adults is the | show 🗑
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When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is call | show 🗑
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define neurotransmitter | show 🗑
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What symptoms would a nurse focus on in his or her care of a patient with multiple sclerosis? | show 🗑
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