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.
Pyramids and Average Ancient Egyptians. The construction of pyramids in ancient Egypt affected many peoples' lives in their exhaustive construction. First, priests and architects determined the location and came up with the design.Slaves weren't used to build these enormous tombs, but rather average citizens who worked in farming.he Era of Pyramid Construction. The ancient Egyptian civilization lasted for close to 4,000 years and more than 100 separate pyramid construction projects took place. However, the main pyramid-building era lasted for around a millennium, through the Old and Middle kingdoms.