The GI (gastrointestinal) tract, also known as the digestive tract, is a complex system responsible for the digestion and absorption of nutrients from food. It begins at the mouth, where food is ingested, and continues through the esophagus, stomach, small intestine, and large intestine, ending at the anus. Along the way, various organs such as the liver, pancreas, and gallbladder contribute digestive enzymes and other substances to aid in the process. The GI tract also plays a crucial role in immune function, as it is home to a large portion of the body’s immune cells. Disruptions or diseases affecting the GI tract can lead to a variety of symptoms and health issues, highlighting its importance in overall well-being.