BIO 365R lecture 1 - The stretch refex Spinal cord The...

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Unformatted text preview: The stretch refex Spinal cord The stretch refex The stretch refex: extracellular recordings From sensory & spinal neurons. Action potentials or nerve impulses The stretch refex: intracellular recordings From sensory & spinal neurons. The stretch refex: intracellular recordings From sensory & spinal neurons.-70 mV depolarization hyperpolarization Resting potential 0.5 msec The stretch refex: intracellular recordings From sensory & spinal neurons. 0.5 msec The stretch refex: intracellular recordings From sensory & spinal neurons. Questions? Why do neurons have a negative resting potential? What is the nature of an action potential? A synaptic potential? What allows an action potential to be propagated along an axon (for many centimeters)? Why are synaptic potentials NOT propagated? How does one neuron excite (depolarize) or inhibit (hyperpolarize) another neuron? What is responsible for the 0.5 msec delay at the synapse?...
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BIO 365R lecture 1 - The stretch refex Spinal cord The...

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