The small intestine is a long, coiled tube where most digestion and nutrient absorption occurs. It consists of three parts: the duodenum, jejunum, and ileum.
5 Must Know Facts For Your Next Test
The small intestine hosts a diverse microbiota that plays a crucial role in digestion and immune function.
Digestive enzymes from the pancreas and bile from the liver aid in breaking down food in the small intestine.
Most water and nutrients are absorbed in the small intestine, particularly in the jejunum and ileum.
The mucosal surface of the small intestine has villi and microvilli to increase surface area for absorption.
Pathogens like Salmonella, E. coli, and Giardia can infect the small intestine, leading to conditions such as gastroenteritis.