The abdominal aorta begins at the level of the diaphragm, crossing it via the aortic hiatus, technically behind the diaphragm, at the vertebral level of T12.It travels down the posterior wall of the abdomen, anterior to the vertebral column.tructure [edit]. The abdominal aorta begins at the level of the diaphragm, crossing it via the aortic hiatus, technically behind the diaphragm, at the vertebral level of T12. It travels down the posterior wall of the abdomen, anterior to the vertebral column.
Other Mesopotamian innovations include the control of water by dams and the use of aqueducts. Early settlers of fertile land in Mesopotamia used wooden plows to soften the soil before planting crops such as barley, onions, grapes, turnips, and apples. Mesopotamian settlers were some of the first people to make beer and wine. As a result of the skill involved in farming in the Mesopotamian, farmers did not depend on slaves to complete farm work for them, but there were some exceptions.
Irrigation in Mesopotamia. Even though the farmland of Sumer was so fertile, crops planted there still needed water, and rainfall in the area, even during ancient times, would have been very scarce. As a result, Mesopotamians developed a system of irrigation.