Final answer:
The process of transporting digested nutrients from the GI tract into the bloodstream or lymphatic fluid is known as absorption, which mostly occurs in the small intestine.
Step-by-step explanation:
The transport of digested end products from the lumen of the gastrointestinal (GI) tract into the bloodstream or lymphatic fluid is called absorption. This process occurs primarily within the small intestine, where nutrients are absorbed through the epithelial cells that line the mucosa. Lipids, meanwhile, are absorbed into lacteals and are transported to the bloodstream through the lymphatic vessels.Other processes within the digestive system include ingestion, which is the intake of food; propulsion, which is the movement of food along the GI tract; mechanical digestion and chemical digestion, which are the physical and chemical breakdown of food; and defecation, the elimination of undigested materials as feces.