Structure [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.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.
Lewis and Clark had to think ahead and plan for times when wild game would be unavailable or in short supply. Their keelboat was stocked with nearly 7 tons of dry goods, including flour, salt, coffee, pork, meal, corn, sugar, beans and lard.
The first time Lewis and Clark encountered Native Americans was on August 2, 1804.An interpreter, Mr. Fairfong, and a group of Oto Indians entered camp.ho were the most hostile Native Americans that Lewis and Clark met? During the Lewis & Clark expedition in the first decade of the  1800s, one of the greatest challenges on both the outbound and  return voyages came from the Sioux Natives th â¦ at were encountered.