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- 1. Multiple Choicepart of a neuron that receives information from other neuronsaxondendritesmyelin sheathsynapse
- 2. Multiple Choicea signal molecule that transmits nerve impulses across synapsesneuronneurotransmitternerveaction potential
- 3. Multiple Choice
Which ions are involved in the electrical nerve impulse?Iodine and SodiumPotassium and SodiumIron and SodiumCalcium and Iodine - 4. Multiple Choice
What contains the nucleus of the neuron?
Terminal Bouton
Cell Body
Axon Hillock
Myelin Sheath
- 5. Multiple ChoiceWhen a neuron is depolarized, what are the first channels to open?SodiumPotassiumCalciumACTH
- 6. Multiple ChoiceWhat number(s) on the graph represents the Resting Potential?1 and 21 and 52 and 33 and 4
- 7. Multiple Choice-70 mV is the measure of aThreshold PotentialAction PotentialResting PotentialEnd Point Potential
- 8. Multiple ChoiceA membrane potential becoming less negative is calledhyperpolarizationdepolarizationrepolarizationpolarization
- 9. Multiple ChoiceWhat number on the graph represents the Depolarization phase?1234
- 10. Multiple ChoiceWhat number on the graph represents the Hyperpolarization phase?1234
- 11. Multiple ChoiceWhat is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?AxonDendritesNode of RanvierMyelin Sheath
- 12. Multiple Choice
Which of the following uses ACTIVE transport?
sodium-potassium pump
sodium channel
potassium channel
diffusion
- 13. Multiple Choice
What number(s) on the graph represents the THRESHOLD level of stimulus?
1 and 5
2
3
6
- 14. Multiple Choice
What number on the graph represents the repolarization phase?
1
2
3
4
- 15. Multiple ChoiceThis type of channel respondes to a change in the electrical potential of the cell membraneleakyvoltage gatedmechanically gated
- 16. Multiple ChoiceMyelinated axons perfom ___________ conductionsaltitorycontinuous
- 17. 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
- 18. Multiple ChoiceGaps in the myelin sheath are called this.Nodes of RanvierAxon terminalsSynapsesNeurotransmitters
- 19. Multiple ChoiceProduce the fatty, white substance that is wrapped around the axon of a neuron.Schwann's CellsGlial Cells
- 20. Multiple ChoiceWhat is structure labeled C in the picture?DendriteAxonCell BodyAxon Terminal
- Answer choicesTagsAnswer choicesTags