module 6 Action Potential.pdf - 8/1/2019 Action Potential...

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8/1/20191Action PotentialAnatomy and Physiology I12/1/16Copyright Rasmussen, Inc. Proprietary and Confidential2Define and describe the role of membranepotentials and action potentials.Describe the function of a synapse and the roleneurotransmitters have.Objectives12/1/16Copyright Rasmussen, Inc. Proprietary and Confidential3Resting Membrane PotentialVoltage difference across the cell membrane while cell isat rest• ThresholdMembrane voltage at which an action potential isinitiatedAction PotentialChange in voltage of a cell membrane in response to astimulus that results in transmission of an electricalsignal; unique to neurons and muscle fibersDefinitions
8/1/2019212/1/16Copyright Rasmussen, Inc. Proprietary and Confidential4Membrane Potentials12/1/16Copyright Rasmussen, Inc. Proprietary and Confidential5Neurotransmitters are released from presynapticneuron and bind to postsynaptic cleftTriggers opening of ion channels

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