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Physiology Help
Physiology
| Question | Answer |
|---|---|
| When a neuron is resting, the inner surface of its plasma membrane is slightly positive compared with its outer surface. | False |
| The sodium-potassium pump actively pumps three potassium ions out of the neuron and two sodium ions into the neuron. | False |
| A term commonly used as a synonym for action potential is | nerve impulse. |
| The difference in electrical charge between the inside and outside of a membrane is called the membrane potential. | True |
| Which chemicals allow neurons to communicate with one another? | neurotransmitters |
| The speed of a nerve impulse depends on the neuron’s resting potential. | False |
| An ion channel that opens in response to a sensory stimulus is a(n) | stimulus-gated channel. |
| The action potential seems to “leap” from node to node along a myelinated fiber. This type of impulse regeneration is called __________ conduction. | saltatory |
| Neurons are the only living cells that maintain a difference in the concentration of ions across their membranes. | False |
| 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 |
Created by:
Kevin.Ford
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