a&p - graded potentials

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7 Terms

1
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Graded Potentials

what are they?

short lived, localized changes in membrane potential

2
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Graded Potentials

why are they called graded?

because their magnitude varies directly with the stimulus strength

3
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Graded Potentials

what changes based on where the graded potential occurs?

it’s name

4
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Graded Potentials

list two types of graded potentials

named based on where they occur

  1. Postsynaptic potential

  2. Receptor potential

5
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Graded Potentials

describe receptor potential

when a receptor of a sensory neuron is excited by some form of energy

6
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Graded Potentials

describe postsynaptic potential

occurs in dendrites or cell body in response to another neuron releasing neurotransmitter

7
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Graded Potentials

what are graded potential important for?

they are needed to initialize action potential