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Nakia White
Nerve Signaling
| Question | Answer |
|---|---|
| The difference between sodium and potassium in the generation of action potential is that: sodium causes depolarization of the cell membrane, and potassium causes repolarization of the | cell membrane |
| If the magnitude of the local depolarization surpasses a limit called the _____, voltage-gated Na+ channels are stimulated to open. | threshold potential |
| A synapse can occur only between an axon and: | a cell body, a dendrite, another axon |
| Which chemicals allow neurons to communicate with one another? | Neurotransmitters |
| A membrane that exhibits a membrane potential is said to be | Polarized |
| A neurologist is using a voltmeter to measure potential. The membrane potential of a neuron was recorded at +30 mV. This is what type of membrane potential? | Action |
| Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
| When neurotransmitters from synaptic knobs stimulate a postsynaptic neuron in rapid succession, their effect can add up over a brief period to produce an action potential. This is called | temporal summation |
| Movement of the membrane potential away from zero (below the usual RMP) is called | Hyperpolarization |
| A term commonly used as a synonym for action potential is | nerve impulse |
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nakiaw4893
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