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- 1. Multiple ChoicePart of a neuron that receives information from other neuronsaxondendritesmyelin sheathsynapse
- 2. Multiple Choicea junction at which a neuron meets another cellaxondendritesmyelin sheathsynapse
- 3. Multiple Choice
What number(s) on the graph represents the Resting Potential?1 and 21 and 52 and 33 and 4 - 4. Multiple ChoiceWhen a neuron is depolarized, what are the first channels to open?SodiumPotassiumCalciumACTH
- 5. Multiple ChoiceWhen a neuron is resting, the inside of the axon has a ____________ charge.-55 mV-70 mV40 mV-75 mV
- 6. Multiple ChoiceWhen a neuron is not engaged in an impulse.Resting potentialAction potentialNeural potentialSynaptic potential
- 7. Multiple ChoiceWhich ions are involved in the electrical nerve impulse?Iodine and SodiumPotassium and SodiumIron and SodiumCalcium and Iodine
- 8. Multiple ChoiceWhat number on the graph represents the Depolarization phase?1234
- 9. Multiple ChoiceWhat number on the graph represents the Hyperpolarization phase?1234
- 10. Multiple ChoiceThe sodium-potassium pump....Sends (Na+) into the cellSends (K+) into the cellExchanges (K+) & (Na+) during depolarizationExchanges (K+) & (Na+) during hyperpolarization
- 11. Multiple ChoiceWhy is -55 mV a significant number?This is the largest charge achieved during an action potentialThis is the threshold required to complete an action potentialThis is the resting charge of a neuronThis is the charge when all the sodium is inside the cell
- 12. Multiple ChoiceAt what stage are both ions present in large concentrations INSIDE the neuron?DepolarizarionRepolarizationHyperpolarizationResting Potential
- 13. Multiple ChoiceAt what stage does Potassium end outside the neuron, and Sodium ends inside the neuron?DepolarizarionRepolarizationHyperpolarizationResting Potential
- 14. Multiple ChoiceWhy is hyperpolarization important?It makes sure the neuron is healthyIt prevents a second, unwanted signal from being sentIt makes sure the neurons are in the correct spaceIt makes sure the charge is back at -70 mV
- 15. Multiple ChoiceAt what stages do Sodium/Potassium Channels open?Repolarization/ RepolarizationDepolarization/ HyperpolarizationHyperpolarization/ RepolarizationDepolarization/ Repolarization
- Answer choicesTagsAnswer choicesTags