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Team Awesome (Action Potential/Signals Conducted by axons of neurons)

Team Awesome (Action Potential/Signals Conducted by axons of neurons). Created By: Kayla Topp , Demri Horton, Lauren Wing, Sharon Greer. Hyperpolarization. An increase in the electrical gradient across the membrane Overshooting the equilibrium for resting potential of the potassium

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Team Awesome (Action Potential/Signals Conducted by axons of neurons)

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  1. Team Awesome(Action Potential/Signals Conducted by axons of neurons) Created By: Kayla Topp, Demri Horton, Lauren Wing, Sharon Greer

  2. Hyperpolarization • An increase in the electrical gradient across the membrane • Overshooting the equilibrium for resting potential of the potassium • Stimuli that open potassium channels hyperpolarized neurons

  3. Depolarization • Reduction in the magnitude of the membrane potential • Stimuli that opens sodium channels depolarize the neuron

  4. Action Potential • A stimulus strong enough to produce a depolarization that reaches the threshold triggers a different type of response • Nerve impulse that is non-graded (mag. is independent of the strength of the stimulus) • Plasma membrane of excitable cells have voltage gated channels -Ion channels with gates that open and close with membrane potential changes

  5. Propagation of Action Potential

  6. Saltatory Conduction • Action potential jumps down the axon from node to node • Increases speed of transmission of nerve pulses

  7. Works Cited • http://learnpediatrics.com/files/2010/08/Slide11.jpg • http://www.ric.edu/faculty/jmontvilo/335graphics/action_potential/polarizations.JPG • http://www.apexamreview.com/apbiology/index.php?option=com_content&view=article&id=51 • http://classes.midlandstech.edu/carterp/Courses/bio210/chap11/Slide18.JPG

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