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Worksheetsgeneration of action potential
Total questions: 10
Worksheet time: 6mins
Which of the following occurs when the axon is stimulated?
Sodium ions diffuse out of the axon
the sodium-pottasium pump is stimulated
the resting potential becomes an action potential
The axon membrane becomes less permeable
Which of the following occurs first when a voltage reaches the threshold level?
The K+ ion channels close
Voltage-gated Na+ channels open
Neurotransmitter reuptake takes place at the synapse
The membrane hyperpolarises
THe graph shows the generative phase and transmission of an impluse along the axon of a neurone
P- depolarization phase
Q- hyperpolarization phase
P-Repolarizaton phase
Q-Depolarization phase
P-Resting membrane potential
Q- Hyperpolarization phase
P-Repolarization phase
Q- Resting membrane potential
The diagram shows the action potential produced when a nerve is stimulated. Which of the following occurs at P?
The stimulus intensity is below the threshold level
the is an influx of sodium ions into the axoplasm
repolarization occurs
the voltage-gated potassium channels remain open
In resting potential, neurons have more _______on the outside of the cell membrane
K+
NaCl
Na+
Cl-
What number on the graph represent hyperpolarization phase
1
2
3
4
When a neuron depolarized, what rea the first channel to open?
Sodium
Potassium
Calsium
Na+K+ pump
This event occurs when potassium voltage gated channel stay open too long and then close when the membrane potentila reaches -90mV
deporlarization
hyperpolarization
repolarization
resting state
A membrane potential becoming less negative is called
hyperpolarization
repolarization
depolarization
polarization
What numbers on the graph represent the ersting potential?
1 and 2
1 and 5
2 and 3
3 and 4
