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10 Cards in this Set
- Front
- Back
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How important is ATP in the Na/K ATPase Pump and the channels?
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The Na/K ATPase Pump needs ATP.
The channels do not. |
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What is a concrete example of negative feedback?
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A thermostat
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When are the Na+ channels closed?
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During resting potential.
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when does sensory information bypass the brain?
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When reflexes occur.
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What does the undershoot after the depolarization mean?
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It means that the membrane remains more hyper polarized than it originally was for a brief period of time.
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Can hyper polarization of the membrane occur?
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Yes. It can help stop action potentials from occurring.
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What are the 3 phases of the action potential in the membrane?
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1 Depolarization
2 Re polarization 3 Undershoot |
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What happens if the stimulus invokes a depolarization that does not reach the threshold?
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The depolarization dies down are the membrane resumes its resting potential.
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What are action potentials?
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Changes in the membrane voltage that produce electrical signals.
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How is information transmitted from neuron to neuron?
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An electrical signal runs along the axon of the neuron. Chemical signals are the released from the axon terminal of the presynaptic axon into the synaptic gap. The dendrite of the postsynaptic neuron then receives the chemical message and turns it into electrical signals so that the cycle can satrt again.
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