EGD or Upper Endoscopy Procedure. The device used during an EGD procedure is called a flexible endoscope. It is tubular in shape and is very similar to the colonoscope that gastroenterologists use to examine a patientâs colon during a colonoscopy procedure, just thinner in diameter.
What causes ocean currents? Ocean currents result from two processes - the action of wind on the surface of the water, and from variation in water temperature that causes movement- a process known as convection. Convection occurs because the oceanic waters heat up becoming less dense.
Surface currents in the ocean are primarily driven by the wind. Examine the relationship between global wind directions and the direction of surface currents. Notice that currents flowing toward the equator are generally cool and currents flowing away from the equator are warm.xamine the relationship between global wind directions and the direction of surface currents. Notice that currents flowing toward the equator are generally cool and currents flowing away from the equator are warm.