Final answer:
Structures derived from the foregut include the stomach, liver, and duodenum. They are suspended by the lesser omentum, falciform ligament, and mesentery.
Step-by-step explanation:
The structures derived from the foregut include the stomach, liver, and the first portion of the small intestine (duodenum). These structures are suspended by various mechanisms.
The stomach is suspended from the inferior border of the liver by a fold of peritoneum called the lesser omentum. The liver is anchored to the anterior abdominal wall and the inferior border of the diaphragm by the falciform ligament. The duodenum is suspended by the mesentery and the ligament of Treitz.