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