14.5 - Pacinian Corpuscles Flashcards by Sam McGee

Q

What are sensory receptors?

A

Specialised cells that detect stimuli

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Q

What do receptors act as?

A

Transducers

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Q

What is a transducer?

A

Converts one form of energy into another

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Q

What types of stimuli do photoreceptors detect?

A

Light

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Q

What types of stimuli do chemoreceptors detect?

A

Chemicals

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Q

What types of stimuli do mechanoreceptors detect?

A

Pressure

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Q

What types of stimuli do thermoreceptors detect?

A

Temperature

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Q

What is resting potential?

A

Voltage across cell membrane at rest

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Q

What is generator potential?

A

Change in membrane voltage when stimulated

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Q

What is the effect of a larger stimulus?

A

Larger generator potential

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Q

What triggers an action potential?

A

Generator potential reaching threshold

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Q

What do Pacinian corpuscles detect?

A

Pressure and vibrations

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Q

What are lamellae?

A

Layers of connective tissue in Pacinian corpuscles

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Q

How does a Pacinian corpuscle work?

A

Lamellae deform

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