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- 1. Multiple ChoiceWhat is the normal resting potential of a neuron cell membrane?+40mV-30mV+55mV-70mV
- 2. Multiple ChoiceWhich ions are involved in an action potential?Na; ClNa; KK; ClNa; Ca
- 3. Multiple Choice
At which point on the diagram does depolarisation of the axon occur?ABCD - 4. Multiple ChoiceThe sodium potassium pump restores the resting potential. By which process does this work?OsmosisDiffusionFacilitated diffusionActive transport
- 5. Multiple ChoiceA membrane potential becoming less negative is calledhyperpolarizationdepolarizationrepolarizationpolarization
- 6. Multiple ChoiceIn resting potential, neurons have more _________ on the outside of the cell membrane.K+NaClNa+Cl-
- 7. Multiple Choice
An electrical impulse within a single neuron is called a
synapse
membrane potential
action potential
cell body
- 8. Multiple Choice
Which ion is pumped into the axon of a neuron to help maintain the resting potential?
calcium
hydrogen
potassium
sodium
- 9. Multiple Choice
Depolarization is occuring at number
1
2
4
5
- 10. Multiple ChoiceWhen a membrane potential reaches +30mV, ________ channels open, ________ occurs, and ________ channels close.Sodium, depolarization, potassiumPotassium, depoloarization, sodiumsodium, repolarization, potassiumpostassium, repolarization, sodium
- 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 Choice
What causes the Sodium/Potassium Channels open?
Repolarization of the dendrites
They are voltage gated
They are chemically gated
They open when the membrane is stretched
- 13. Multiple ChoicePart of a neuron that receives information from other neuronsaxondendritesmyelin sheathsynapse
- 14. Multiple Choicea junction at which a neuron meets another cellaxondendritesmyelin sheathsynapse
- 15. Multiple Choice
At which point on the diagram does repolarization of the axon occur?
ABD-E
F-A
- Answer choicesTagsAnswer choicesTags