Cardiac electrophysiology is the science of elucidating, diagnosing, and treating the electrical activities of the heart. The term is usually used to describe studies of such phenomena by invasive (intracardiac) catheter recording of spontaneous activity as well as of cardiac responses to programmed electrical stimulation (PES).
Ancient Egyptian Pyramids in Giza. Egyptian pyramids are great monument of a great civilization that was born seven thousand years ago. The ancient Egyptians built more than 90 royal pyramids, from about 2630 BC until about 1530 BC.During that time, the pyramid shape evolved from a series of stepped terraces to sloped pyramidal shape.ncient Egyptian Pyramids in Giza. Egyptian pyramids are great monument of a great civilization that was born seven thousand years ago. The ancient Egyptians built more than 90 royal pyramids, from about 2630 BC until about 1530 BC.
Report Abuse. In Egypt pyramids were built as tombs for Kings and Queens. The great pyramid was the tomb of Cheops, he was King of the old Kingdom, the fourth dynasty. The great pyramid is 4600 years old.There are pyramids in Mexico, but they are more modern and they are temples not tombs.eport Abuse. In Egypt pyramids were built as tombs for Kings and Queens. The great pyramid was the tomb of Cheops, he was King of the old Kingdom, the fourth dynasty. The great pyramid is 4600 years old.