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The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.
In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva.
The complete human digestive system is made up of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver and gallbladder). The tract may also be divided into foregut , midgut , and hindgut , reflecting the embryological origin of each segment.
Jun 18, 2024 · 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.
In the human digestive system, the stomach lies between the esophagus and the duodenum (the first part of the small intestine). It is in the left upper quadrant of the abdominal cavity. The top of the stomach lies against the diaphragm. Lying behind the stomach is the pancreas.
The digestive system is the parts of the body that digest food. It is the gastrointestinal system. It breaks down food into simple chemicals which can be absorbed into the blood stream. It also produces waste, which be expelled by passing gas, pooping, or even passing urine.
The esophagus is one of the upper parts of the digestive system. There are taste buds on its upper part. [3] It begins at the back of the mouth, passing downward through the rear part of the mediastinum , through the diaphragm , and into the stomach.
Gastrointestinal physiology is the branch of human physiology that addresses the physical function of the gastrointestinal (GI) tract. The function of the GI tract is to process ingested food by mechanical and chemical means, extract nutrients and excrete waste products.
Phases of digestion. Appearance. The nervous system, and endocrine system collaborate in the digestive system to control gastric secretions, and motility associated with the movement of food throughout the gastrointestinal tract, including peristalsis, and segmentation contractions.
In mammals, the large intestine consists of the cecum (including the appendix ), colon (the longest part), rectum, and anal canal. [1] The four sections of the colon are: the ascending colon, transverse colon, descending colon, and sigmoid colon. These sections turn at the colic flexures .
