Sequential Opening of Na + and K+ Channels
Generate the Action Potential
Rising Phase of
Action Potential
Falling Phase of
Action Potential
Rest
Na + Channels
Open
Na + Channels Close;
K+ Channels Open
Voltage-Gated
Channels Closed
Na +
+
K+
-
+
+
-
+
-
+
-
+
+
-
-
+
+
Text Box: +
Text Box: +
-
+
-
-
+
+
+
-
-
+
+
-
Text Box: +
+
-
-
+
+
+
+
+
-
-
-
-
-
-
Text Box: +