Which of the Following Statements Is False

Multiple Choice

Which of the following statements is false?

A) A heart will stop beating when the nerves to the heart are severed.
B) Some cardiac muscle cells are self-excitatory.
C) The pacemaker of the heart is the sinoatrial node.
D) Cardiac muscle cells have numerous gap junctions on their sides to allow rapid communication.
E) Cardiac muscle cells of the two ventricles contract essentially in unison.