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Sep 21 2010, 8:21 PM EDT AndyC
edit 167 words added
Change: Richly innervates the conducting system of the heart: the right sympathetic and parasympathetic branches terminate chiefly in the region of the SA node, and the left branches end chiefly in the region of the AV node. The cardiac muscle fibers are devoid   View changes from previous version. (Word count: 159)
Sep 21 2010, 8:17 PM EDT AndyC
create No content added or deleted.