Welcome to the Quiz!
This quiz contains 9 questions from a mix of 1 subtopics.
What triggers an action potential?
a constant generator potential
a generator potential below the threshold level
a generator potential reaching a threshold level
a decrease in the generator potential
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How does increasing the strength of a stimulus affect a receptor cell?
it has no effect
it increases the size of the generator potential
it decreases the number of action potentials
it decreases the generator potential
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Which of these is NOT true about how receptor cells function?
the cell membrane becomes more permeable in response to a stimulus
a small generator potential triggers an action potential
at rest, there is a voltage across the cell membrane
more action potentials indicate a stronger stimulus
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What are Pacinian corpuscles?
photoreceptors
mechanoreceptors
thermoreceptors
chemoreceptors
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What type of stimulus do Pacinian corpuscles detect?
temperature
chemicals
pressure
light
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What is the name given to the layers of connective tissue in a Pacinian corpuscle?
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What happens when the Pacinian corpuscle is stimulated?
the lamellae expand
the lamellae deform
the lamellae disappear
the lamellae remain the same
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What happens when the lamellae in Pacinian corpuscles deform?
potassium ions diffuse out of the neurone
sodium ions diffuse out of the neurone
potassium ions diffuse into the neurone
sodium ions diffuse into the neurone
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Describe the stages involved when a Pacinian corpuscle detects a stimulus.
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