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- 1. Multiple Choice
Part of a motor neuron that receives information from other neurons
axon
dendrites
myelin sheath
synapse
- 2. Multiple Choice
Which numbers on the graph represents the Resting Potential?
1 and 2
1 and 5
2 and 3
3 and 4
- 3. Multiple Choice
When a neuron csm becomes depolarised, what are the first channels to open in response to a stimulus?
Sodium
Potassium
Calcium
- 4. Multiple ChoiceWhen a neuron is resting, the inside of the axon has a ____________ charge.positivenegative
- 5. Multiple Choice-70 mV is the measure of aThreshold PotentialAction PotentialResting PotentialEnd Point Potential
- 6. Multiple Choice
Depolarisation begins when ________ channels open, then _________ channels open and ____________ occurs.
Sodium, depolarization, potassium
Potassium, depolarisation, sodium
sodium, potassium, repolarisation
postassium, repolarisation, sodium
- 7. Multiple ChoiceWhat number on the graph represents the Depolarization phase?1234
- 8. Multiple ChoiceWhat number on the graph represents the Hyperpolarization phase?1234
- 9. Multiple Choice
Describes the fact that action potential has the same amplitude despite the intensity of the stimulus.
Threshold
Repolarization
All or Nothing Principle
Action Potential
- 10. Multiple Choice
Why is -55 mV a significant number?
This is the largest voltage achieved during an action potential
This is the threshold required to initiate an action potential
This is the resting voltage of a neuron
This is the voltage when all the sodium is inside the cell
- 11. Multiple Choice
Which letter represents the time when voltage-gated sodium channels open?
A
B
D
F
- 12. Multiple ChoiceLabel the Neuron-What does the letter "H" represent?Schwann CellAxonAxon TerminalDendrite
- 13. Multiple ChoiceLabel the Neuron-What does the letter "C" represent?Cell BodyDendriteAxon TerminalMyelin Sheath
- 14. Multiple ChoiceLabel the Neuron-What does the letter "A" represent?AxonDendriteAxon TerminalCell Body
- 15. Multiple Choice
Depolarization occurs when
sodium channels open
potassium channels open
sodium channels close
potassium channels close
- 16. Multiple Choice
Which of the following uses ACTIVE transport?
sodium-potassium pump
sodium channel
voltage-gated potassium channel
diffusion
- 17. Multiple Choice
What number on the graph represents a time when voltage-gated potassium channels are open?
1
2
3
- 18. Multiple Choice
Approximately how long is the duration of the action potential shown in the diagram?
1 ms
2 ms
3 ms
4 ms
- 19. Multiple Choice
In which direction is the action potential transmitted?
From A to H
From A to C
From H to D
- 20. Multiple Choice
Which concept does this diagram best represent?
Resting membrane potential
Threshold potential
All or nothing response
- 21. Multiple Choice
When can an action potential NOT be initiated? (tick all that apply)
When voltage-gated sodium ion channels are recovering
During the absolute refractory period
When the threshold potential is not met
During the relative refractory period
- 22. Multiple Choice
True or False: Saltatory conduction slows down the transmission of an impulse
True
False
- 23. Multiple Choice
True or False: Depolarisation can only occur at the Nodes of Ranvier of an axon of a myelinated neuron
True
False
- Answer choicesTagsAnswer choicesTags