Indicate which ion is involved in each event being described by using the following answer code.
a.K+
b.Na+
c.Ca₂₊
-Parasympathetic stimulation increases the permeability of the SA node to _____, whereas sympathetic stimulation decreases the permeability to this same ion.

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The Answer of Indicate which ion is involved in each event being described by using the following answer code.
a.K+
b.Na+
c.Ca₂₊
-Parasympathetic stimulation increases the permeability of the SA node to _____, whereas sympathetic stimulation decreases the permeability to this same ion.

Indicate Which Ion Is Involved in Each Event Being Described