What is cholecystitis?Cholecystitis is inflammation of the gallbladder, a small organ near the liver that plays a part in digesting food. Normally, fluid called bile passes out of the gallbladder on its way to the small intestine. If the flow of bile is blocked, it builds up inside the gallbladder, causing swelling, pain, and possible infection. What causes cholecystitis?A gallstone stuck in the .
jet stream. A narrow current of strong wind circling the Earth from west to east at altitudes of 10 to 15 miles (16 to 24 kilometers) above sea level. There are usually four distinct jet streams, two each in the Northern and Southern Hemispheres.
jet streamâ High-speed winds usually found at high altitudes, just below the tropopause, between 25,000 and 45,000 ft. The term jet stream was coined by the first pilots who encountered this strong wind, to whom it seemed as though the air was being blown out of a gigantic nozzle or jet.he wind generated at polar fronts helps to power polar-front jet streams. tropopauseâ The zone in the atmosphere that divides the troposphere and the stratosphere. The altitude of the tropopause varies with latitude, being highest above the equator (about 12 miles) and lowest near the poles (less than five miles).