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.
Thomas Jefferson. Jefferson called his expedition theCorps of Discovery.. To lead it, the president had turned to his personal secretary, Meriwether Lewis, a young army officer from Virginia.As co-commander, Lewis picked an old army friend and fellow Virginian, William Clark, a gregarious, seasoned frontiersman.eriwether Lewis & William Clark. The great father was Thomas Jefferson, president of the new United States, who had just purchased from France half a billion acres between the Mississippi River and the Rocky Mountains, doubling the size of his young republic with a single stroke of his pen.