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.
The pyramids are the stone tombs of Egypt's kings-the Pharaohs and one of the world's greatest historical mysteries. They have stood for thousands of years, filled with many hidden secrets: clues about what life (and death) was like in Ancient Egypt.ne of the greatest pyramids was made by King Khufu.... The Giza Pyramids Wander through the chambers and passageways of the Great Pyramid, and learn about the pharaohs for whom these monumental tombs were built.