Foregut

Definition

The foregut is an embryonic division of the gastrointestinal tract that gives rise to the upper parts of the digestive system, including the esophagus, stomach, and initial portion of the small intestine (duodenum), as well as respiratory structures like the trachea and lungs. It is crucial in the early development of the respiratory system, setting the foundation for breathing and digestion mechanisms.

Related terms

Trachea: The windpipe that connects the larynx to the bronchi, allowing air passage to and from the lungs.

Esophagus: A muscular tube that conveys food from the mouth to the stomach using rhythmic waves of contractions known as peristalsis.

Duodenum: The first section of the small intestine immediately beyond the stomach, which receives partially digested food from the stomach and begins nutrient absorption