Human digestive system | Description, Parts, Functions | Britannica human digestive system, system used in the human body for the process of digestion The human digestive system consists primarily of the digestive tract, or the series of structures and organs through which food and liquids pass during their processing into forms that can be absorbed into the bloodstream The system also consists of the
Human digestive system - Anatomy, Organs, Processes | Britannica Human digestive system - Anatomy, Organs, Processes: The small intestine, which is 670 to 760 cm (22 to 25 feet) in length and 3 to 4 cm (about 2 inches) in diameter, is the longest part of the digestive tract It begins at the pylorus, the juncture with the stomach, and ends at the ileocecal valve, the juncture with the colon
Human digestive system - Organs, Processes, Functions | Britannica Human digestive system - Organs, Processes, Functions: The liver lies under the lower right rib cage and occupies much of the upper right quadrant of the abdomen, with a portion extending into the upper left quadrant
digestive system - Kids | Britannica Kids | Homework Help The digestive tract begins with the mouth and ends at the anus The main organs of the digestive system are the mouth, the pharynx, the esophagus, the stomach, and the small and large intestines The liver, the gall bladder, and the pancreas also help in the process of digestion
Human digestive system - Proteins, Enzymes, Absorption | Britannica Human digestive system - Proteins, Enzymes, Absorption: The digestion of protein entails breaking the complex molecule first into peptides, each having a number of amino acids, and second into individual amino acids
Human digestive system - Enzymes, Absorption, Nutrients | Britannica Human digestive system - Enzymes, Absorption, Nutrients: Although the small intestine is only 3 to 4 cm in diameter and approximately 7 metres in length, it has been estimated that its total absorptive surface area is approximately 4,500 square metres (5,400 square yards)
Human digestive system - Intestinal Gas, Digestive Process, Nutrition . . . Human digestive system - Intestinal Gas, Digestive Process, Nutrition: The movement of gas through the intestines produces the gurgling sounds known as borborygmi In the resting state there are usually about 200 ml of gas in the gastrointestinal tract
Human digestive system - Fats, Enzymes, Absorption | Britannica Human digestive system - Fats, Enzymes, Absorption: Almost all dietary fat is stored as triglycerides Solubility in water is necessary in order for fat to be transferred from the lumen of the intestine to the absorptive cells
Human digestive system - Contractions, Motility, Digestion | Britannica Human digestive system - Contractions, Motility, Digestion: The contractions of the circular and longitudinal muscles are regulated by electrical impulses that begin with the passage of calcium ions into the muscle cell