Chapter 28
-Nervous System: an animal organ system comprised of a network of specialized interacting cells
(neurons) that functions in the detection, processing and response to internal and external stimuli.
Nervous system is divided into two function parts; Central nervous system and Peripheral...
4. Repolarization: I Na+ Ichannels I close I and I inactivate; I K +channels I open, I and I K+ Irushes I out;
I interior Iof Icell Iis Imore Inegative Ithan Ioutside.
5. The IK+Ichannels Iclose Irelatively Islowly, Icausing Ia Ibrief Iundershoot.
6. Return Ito Iresting Istate.
-Resting Ipotentials Iof Ineurons Irange Ifrom I-60 Ito I-70 ImV; Ithreshold Ipotentials Irange Ifrom I-40 Ito
-55 ImV; Iaction Ipotentials Irange Ifrom I+30 Ito I+60 ImV.
-Migrating Iaction Ipotential Icontinues Ialong Ithe Ientire Ilength Iof Ithe Iaxon; INa/K Ipump Ire-
Iestablishes Icorrect Imembrane Iresting Ipotential.
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