Sections: Prologue | Before Lewis & Clark | Lewis & Clark | After Lewis & Clark When Thomas Jefferson sent Lewis and Clark into the West, he patterned their mission on the methods of Enlightenment science: to observe, collect, document, and classify.
Partially digested food, or chyme, from the stomach is mixed with bile from the liver and pancreatic juice from the pancreas to complete its digestion in the duodenum. The jejunum is the middle section of the small intestine that serves as the primary site of nutrient absorption. It measures around 3 feet in length. The ileum is the final section of the small intestine that empties into the large intestine via the ileocecal sphincter.
The first section of the small intestine is the Duodenum. It is the  place where small tubes pour the digestive juices from the pancreas  and the bile from the liver into th â¦ e small intestine.12 people found this useful. The Small Intestine and IBS The gastrointestinal tract is in charge of the entire digestive process within the human body. 2  A large part of the gastrointestinal tract is the small intestine.