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- 1. Multiple ChoiceThe part of the neuron that insulates the axon and increases the speed of the neural message within the neuron.SynapseDendriteMyelin SheathAxon Terminal Button
- 2. Multiple Choice
ADendriteAxonAxon TerminalCell Body - 3. Multiple ChoiceESynapseCell BodyAxonDendrite
- 4. Multiple ChoiceA chemical produced by neurons that carries messages to other neuronsmyelin sheathneurotransmitteraxonaxon terminal
- 5. Multiple ChoiceThe tiny gap between neurons where nerve impulses are sent from one neuron to another. It is where communication occurs between an axon and dendritesynapseaxon terminalimpulsemyelin
- 6. Multiple ChoiceThe part of the neuron that brings information to the cell body is called a(n) ___________.dendriteaxonnucleusnode of Ranvier
- 7. Multiple ChoiceThe part of the neuron that takes information away from the cell body is called a(n) _____________.dendriteaxoncell bodySchwann cell
- 8. Multiple ChoiceLocation at which a neuron can transfer an impulse to another cell with the use of neurotransmitters is called __________.myelin sheathaxonthresholdsynapse
- 9. Multiple ChoiceWhat is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?NeurotransmittersSynapseThresholdImpulse
- 10. Multiple ChoiceWhat is the insulating membrane that surrounds parts of the axon that helps the impulses travel faster called?AxonDendritesNode of RanvierMyelin Sheath
- 11. Multiple ChoiceWhat is the normal resting potential of a neuron cell membrane?+40mV-30mV+55mV-70mV
- 12. Multiple ChoiceWhich ions are involved in an action potential?Na; ClNa; KK; ClNa; Ca
- 13. Multiple ChoiceAt which point on the diagram does depolarisation of the axon occur?ABCD
- 14. Multiple ChoiceThe sodium potassium pump restores the resting potential. By which process does this work?OsmosisDiffusionFacilitated diffusionActive transport
- 15. Multiple ChoiceWhen a neuron is not engaged in an impulse.Resting potentialAction potentialNeural potentialSynaptic potential
- 16. Multiple ChoiceA membrane potential becoming less negative is calledhyperpolarizationdepolarizationrepolarizationpolarization
- 17. Multiple ChoiceIn resting potential, neurons have more _________ on the outside of the cell membrane.K+NaClNa+Cl-
- 18. Multiple Choice
What number(s) on the graph represents the THRESHOLD level of stimulus?
1 and 5
2
3
6
- 19. Multiple ChoiceWhen a membrane potential reaches +30mV, ________ channels open, ________ occurs, and ________ channels close.Sodium, depolarization, potassiumPotassium, depoloarization, sodiumsodium, repolarization, potassiumpostassium, repolarization, sodium
- 20. 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
- 21. Multiple Choice
When is the potassium channel open?
during rest only
during repolarization only
during depolarization only
all the time
- 22. Multiple Choice
Neurotransmitters are released from the
Dendrites
Post-synaptic neuron
Presynaptic neuron
Schwann Cells
- 23. Multiple ChoiceIn order for a neuron to have an action potential, the neuron must receive moreexcitatory neurotransmittersinhibitory neurotransmittersagnostic neurotransmittersantagonistic neurotransmitters
- 24. Multiple ChoiceWAxon Terminal ButtonNeurotransmittersDendriteSynapse
- 25. Multiple Choice
The location of neurotransmitters
axon terminals
dendrites
Schwann cells
cell body
- Answer choicesTagsAnswer choicesTags