Describe and compare the action potentials from cardiac ventricular muscle and the sinoatrial node.

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College Answer

A fundamental aspect of cardiac physiology, that overall was well answered. The majority of 
candidates used figures to good effect. Candidates are reminded that all figures must be correctly labelled (e.g. X and Y axis, phases of action potential, etc.). Common omissions  were those that reflected an adequate depth of knowledge (e.g. some of the current flows).