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.
Besides possessing obvious political overtones, the Lewis and Clark venture into the Louisiana Territory was also a scientific expedition. The commanders of the Corps of Discovery were charged with recording birds, mammals, and various sundry plant life to further the study of those disciplines. Some of the birds mentioned in the journals include âLarge White Gullsâ about which little is known; âCanadian Geeseâ; âMallardsâ and âBlue Wing Tealsâ.