Dual innervation refers to situations in which
A) vital organs receive instructions from both sympathetic and parasympathetic fibers.
B) sympathetic and parasympathetic fibers have excitatory and inhibitory actions.
C) the atria and ventricles of the heart receive innervation from the same nerve.
D) sympathetic and parasympathetic fibers cause the same effect.
E) All of the answers are correct.
A) vital organs receive instructions from both sympathetic and parasympathetic fibers.
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