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- 1. Multiple-choice1 minute1 ptpart of a neuron that receives information from other neuronsaxondendritesmyelin sheathsynapse
- 2. Multiple-choice1 minute1 pta signal molecule that transmits nerve impulses across synapsesneuronneurotransmitternerveaction potential
- 3. Multiple-choice20 seconds1 pt
Which ions are involved in the electrical nerve impulse?Iodine and SodiumPotassium and SodiumIron and SodiumCalcium and Iodine - 4. Multiple-choice2 minutes1 pt
What contains the nucleus of the neuron?
Terminal Bouton
Cell Body
Axon Hillock
Myelin Sheath
- 5. Multiple-choice1 minute1 ptWhen a neuron is depolarized, what are the first channels to open?SodiumPotassiumCalciumACTH
- 6. Multiple-choice1 minute1 ptWhat number(s) on the graph represents the Resting Potential?1 and 21 and 52 and 33 and 4
- 7. Multiple-choice30 seconds1 pt-70 mV is the measure of aThreshold PotentialAction PotentialResting PotentialEnd Point Potential
- 8. Multiple-choice30 seconds1 ptA membrane potential becoming less negative is calledhyperpolarizationdepolarizationrepolarizationpolarization
- 9. Multiple-choice30 seconds1 ptWhat number on the graph represents the Depolarization phase?1234
- 10. Multiple-choice30 seconds1 ptWhat number on the graph represents the Hyperpolarization phase?1234
- 11. Multiple-choice30 seconds1 ptWhat is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?AxonDendritesNode of RanvierMyelin Sheath
- 12. Multiple-choice2 minutes1 pt
Which of the following uses ACTIVE transport?
sodium-potassium pump
sodium channel
potassium channel
diffusion
- 13. Multiple-choice2 minutes1 pt
What number(s) on the graph represents the THRESHOLD level of stimulus?
1 and 5
2
3
6
- 14. Multiple-choice30 seconds1 pt
What number on the graph represents the repolarization phase?
1
2
3
4
- 15. Multiple-choice30 seconds1 ptThis type of channel respondes to a change in the electrical potential of the cell membraneleakyvoltage gatedmechanically gated
- 16. Multiple-choice30 seconds1 ptMyelinated axons perfom ___________ conductionsaltitorycontinuous
- 17. Multiple-choice45 seconds1 ptWhy 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-choice30 seconds1 ptGaps in the myelin sheath are called this.Nodes of RanvierAxon terminalsSynapsesNeurotransmitters
- 19. Multiple-choice30 seconds1 ptProduce the fatty, white substance that is wrapped around the axon of a neuron.Schwann's CellsGlial Cells
- 20. Multiple-choice30 seconds1 ptWhat is structure labeled C in the picture?DendriteAxonCell BodyAxon Terminal
