Nerve Signaling
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | sodium causes depolarization of the cell membrane, and potassium causes repolarization of the cell membrane
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| The sodium-potassium pump actively pumps three potassium ions out of the neuron and two sodium ions into the neuron | show 🗑
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| If the magnitude of the local depolarization surpasses a limit called the _____, voltage-gated Na+ channels are stimulated to open. | show 🗑
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| A synapse can occur only between an axon and: | show 🗑
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| show | Neurotransmitters
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| A membrane that exhibits a membrane potential is said to be | show 🗑
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| show | Action
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| show | Gated-channel receptor
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| show | Neurotransmitter molecules are metabolized into inactive compounds, Neurotransmitter molecules are transported into nearby glial cells, and Neurotransmitter molecules are transported back into synaptic knobs.
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| show | temporal summation
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| show | refractory
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| show | Resting
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| Movement of the membrane potential away from zero (below the usual RMP) is called | show 🗑
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| show | False
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| A term commonly used as a synonym for action potential is | show 🗑
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| In a myelinated fiber, the action potential jumps from one node of Ranvier to the next. | show 🗑
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| In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. | show 🗑
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| show | True
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| show | True
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| There are two types of synapses—the electrical synapse and the __________ synapse. | show 🗑
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| The magnitude of the action potential peaks when the sodium channels close. | show 🗑
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| show | True
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| The speed of a nerve impulse depends on the neuron’s resting potential | show 🗑
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| show | Saltatory
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| show | slight excess of positive ions on the outer surface of the plasma membrane
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| show | synaptic knob
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| show | False
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| show | sodium-potassium pump
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| show | True
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| show | stimulus-gated channel.
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Created by:
Sandoval.Sam
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