Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What is the typical resting potential of a neurone?
+70 mV
-30 mV
-70 mV
+30 mV
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Which ion has a higher concentration outside of a neurone at rest?
calcium
chloride
sodium
potassium
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What is the term for the potential that must be reached to generate an action potential?
threshold potential
repolarisation potential
depolarisation potential
resting potential
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Which ion flows into the neurone during depolarisation?
calcium
sodium
potassium
chloride
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When does repolarisation begin during generation of an action potential?
at around +30 mV
at around -55 mV
at around -70 mV
at around +70 mV
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Which ion flows out of the neurone during repolarisation?
chloride
calcium
sodium
potassium
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Which of the following best describes the all-or-nothing principle of action potentials?
an action potential occurs fully and uniformly once threshold is reached
multiple action potentials can be generated simultaneously
the threshold potential adjusts based on stimulus strength
a stronger stimulus causes a larger action potential
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What happens if the threshold potential is not reached?
a partial response occurs
a full action potential occurs
no action potential occurs
frequency of action potentials increases
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Which aspect of an action potential increases with a stronger stimulus?
size of action potential
speed of conduction
duration of refractory period
frequency of action potentials
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Describe the stages involved in generating an action potential.
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