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
Individual members of this species and other later homo did not all come from Africa. Recent studies on ribosomal DNA indicates that all modern humans had a common ancestor in northern Africa. ANS:Yes, all humans originated in Africa. Scientists have determined that the region that is now Ethiopia was a likely place for the first humans to have evolved. From there they slowly spread out.