march 5 - March 5 Bio Neuron signaling neurons propagate...

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March 5 Bio Neuron signaling → neurons propagate electrical signals In a resting neuron potassium ions are more concentrated outside the membrane than inside the inside is more negative than the outside sodium ions are more concentrated inside than outside action potentials are being generated 3 transport proteins: gated sodium (Na+) channels gated potassium (K+) channels sodium-potassium (Na-K) pump Electrical Signaling ion movements across the membrane change the membrane potential and create electrical signals two types of electrical signal graded potentials = transient local changes in membrane potential magnitude of change varies with strength of stimulus; size is dependent upon size of stimulus hyperpolarization = above/bigger depolarization = to undo action potentials What would happen in a resting neuron if the Na+ channels opened? nothing
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march 5 - March 5 Bio Neuron signaling neurons propagate...

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