10 demographic trends that are shaping the U.S. and the world. By DâVera Cohn and Andrea Caumont25 comments. At its core, demography is the act of counting people. But itâs also important to study the forces that are driving population change, and measure how these changes have an impact on peopleâs lives. For example, how does immigration affect U.S. population growth?
Type of Incisions. TYPE OF INCISIONS Upper Midline The upper midline incision provides access to the esophagus, hiatus, stomach and. duodenum, pancreas, and hepatobiliary system. If extended, it allows major hepatic resection, adrenalectomy, and splenectomy.
A midline incision is a vertical cut made in the abdomen to allow access for any of a number of medical procedures. This cut may be made in the upper or lower portion of the abdomen, or it may run all the way from the top to the bottom of the abdominal cavity.