Final answer:
The gastrointestinal (GI) tract comprises several organs, including the mouth, esophagus, stomach, and intestines, that collectively process food from ingestion to excretion, assisted by accessory organs like the liver and pancreas.
Step-by-step explanation:
The organ associated with the g.i. tract includes several crucial components, starting from the mouth and ending with the anus. The gastrointestinal (GI) tract comprises the upper GI tract, including the mouth, pharynx, esophagus, and stomach, and the lower GI tract, which encompasses the small and large intestines. It functions as a continuous channel through which food is ingested, digested, nutrients absorbed, and waste excreted.
Besides these primary organs, the GI tract is assisted by accessory digestive organs such as the liver, gallbladder, and pancreas, which contribute to the digestion and absorption of nutrients. The GI tract is about 9 meters (30 feet) long in adults, and it takes approximately 50 hours for ingested material to travel the entire length of the digestive system from mouth to anus. The GI tract's specialized structures ensure that food is efficiently broken down and waste materials are removed from the body.