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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| The resting membrane potential is maintained by Na K pumps that actively transport ___ into and ____ out of the cell. | show 🗑
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| show | K
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| show | K
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| In RMP the concentration of ___ is higher outside than inside the cell | show 🗑
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| show | axon hillock
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| Most CNS neurons fall into which structural category? | show 🗑
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| Which cell produces myelin and is located in the PNS? | show 🗑
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| show | oligodendrocytes
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| show | decrease the speed of action potential transmission
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| show | -70 mV
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| The most abundant intracellular cation is _________ while the most extracellular anion is _____________. | show 🗑
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| show | Initial segment
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| show | voltage gated Na channels
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| show | the membrane potential changes from a negative value to a positive value
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| show | Once the membrane depolarizes to a peak value of +30mV, it repolarizes to its negative resting value of -70mV
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| What event triggers the generation of an action potential? | show 🗑
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| show | Voltage-gated Na channels change shape, and their activation gates open.
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| show | continuous conduction
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| show | depolarizing currents established by the influx of Na flow down the axon and trigger an action potential at the next segment
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| Why does regeneration of the action potential occur in one direction, rather than in two directions? | show 🗑
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| show | The myelin sheath increases the speed of action potential conduction from the initial segment to the axon terminals.
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| show | Inactivation gates of voltage-gated Na channels close, while activation gates of voltage-gated K channels open
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| show | Myelinated axons with the largest diameter
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| show | a neuron
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| show | synaptic cleft
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| What role does calcium have in synaptic activity? | show 🗑
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| What is the role of neurotransmitter at a chemical synapse? | show 🗑
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| show | Ache degrades Ach in the synaptic cleft
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| show | It will show spatial summation
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| show |
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Created by:
Beckster89