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This Concept Map, created with IHMC CmapTools, has information related to: membrane potential, membrane potential 4 kinds of ion channels chemically gated- needs N.T., action potential (outgoing signal) large change in membrane potential from -70mV to +30mV definitions relative refractory period- the period of time following an absolute refractory period, in which a cell can generate another action potential, but only if it receives a stimulus that makes the charge higher than normal threshold., membrane potential types of signals action potential (outgoing signal) large change in membrane potential from -70mV to +30mV, membrane potential changed by 3 events depolarization-more positive hyperpolarization-less neg than -70mV repolarization-return to resting state, membrane potential definition used to integrate, send/receive signals. The electrical potential of cell membrane, axon hillock depolarizes to threshhold positive charge flows down the axon, depolariztng adjacent areas of axom membrane, which reach threshold & generate next action potential. the action potential thus moves along the axon in a wave., membrane potential 4 kinds of ion channels voltage gated- opens or closes in response to membrane potential, membrane potential types of signals graded potential- local potential, short lived, decrease in intensity over distance. sufficiently strong graded potentials can become action potential, membrane potential 4 kinds of ion channels passive or leaky, membrane potential 4 kinds of ion channels mechanically gated- open and close in response to physical deformation of receptors, action potential (outgoing signal) large change in membrane potential from -70mV to +30mV definitions absolute refractory period-the period of time following an action potential in which a cell can't generate another action potential, no matter how stimulated, action potential (outgoing signal) large change in membrane potential from -70mV to +30mV axon hillock depolarizes to threshhold