Guide. Pericardial drainage (pericardiocentesis) is done to find the cause of fluid buildup around the heart and to relieve pressure on the heart. The tissue sac that surrounds the heart is called the pericardium. It protects the heart and parts of the major blood vessels connected to the heart.
Quick Answer. The original range of wild cows was northern Africa, Europe and southern Asia. Cows were domesticated between 10,000 and 6,500 years ago by cultures great distances from each other. Typical western cattle are from the older strain, which was most likely first domesticated in Turkey. Continue Reading
Digital Vision./Digital Vision/Getty Images. Chances are 90 percent that the milk you're drinking or the ice cream you're enjoying originated from a Holstein cow. This black-and-white bovine so dominates the dairy market that the next four most common breeds of cows make up the other 10 percent.