Their primary function is to absorb nutrients and vitamins. The small intestine is made up of three parts—the duodenum (first part), the jejunum (middle part), and the ileum (end part).

The first of three sections of the small intestine, the duodenum, produces large quantities of mucus to protect the intestinal lining from acid in the chyme. Measuring about 20 feet (6 meters ...

Extract: At 15 days after birth, the small intestine of the rat showed a striking ... to newborn rats resulted in similar changes in the duodenum and in the jejunum, but not in the ileum.

Medically reviewed by Qin Rao, MD Gastrointestinal (GI) bleeding is a symptom of a disease, condition, or injury affecting ...

The main duct is the pancreatic duct which runs the length of the pancreas. It drains the pancreatic fluid from the gland and carries it to the duodenum (the first part of the small intestine). The ...

Villi and microvilli give the small intestine a much greater surface area than the large intestine. [16] Thus, bypassing of the duodenum and jejenum represents a large loss of surface area for ...