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.
Small IntestineThe small intestine (also known as the small bowel) is the longest portion of the digestive tract-it is more than 6 meters long and is located within the midd â¦ le of the abdomen. It has three sections, the duodenum, jejunum and ileum (more information provided below).mall IntestineThe small intestine (also known as the small bowel) is the longest portion of the digestive tract-it is more than 6 meters long and is located within the midd â¦ le of the abdomen. It has three sections, the duodenum, jejunum and ileum (more information provided below).