Explanation

Hearts are of several types. In some invertebrates the heart is simulated by the nervous system to do its work. Such hearts are called Neurogenic hearts. The Human heart is myogenic. i.e, it receives the stimuli for contraction from the muscular node called sinu-auricular node or pace maker. Myogenicis the term used for muscles or tissues that can contract on their own, without any external electrical stimulus, from the brain or spinal cord forexample. Anexample of this phenomena is actually present in our kidneys to regulate the flow of blood in vessels. Another example is the human heart.