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 Lewis and Clark expedition encountered 174 plants and 134 species and subspecies of animals new to science. Lewis lost the notes about the specimens but analyses and detailed scientific descriptions of the specimens were performed by others.he Lewis and Clark expedition encountered 174 plants and 134 species and subspecies of animals new to science. Lewis lost the notes about the specimens but analyses and detailed scientific descriptions of the specimens were performed by others.