digestive system - ορισμός. Τι είναι το digestive system
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Τι (ποιος) είναι digestive system - ορισμός

BIOLOGICAL PROCESS OF BREAKING DOWN FOOD
Digestive System; Digestive hormone; Absorptive state; Absorbtive state; Absorption (digestive); Absorption (biology); Digestible; Chemical digestion; Disgestive System; Digesting; Digestibility; Fat digestion; Lipid digestion; Digestive Organs; Period of digestion; Digestant; Digested; Mechanics of the digestive tract; Breaking down food
  • A flesh fly "blowing a bubble", possibly to concentrate its food by evaporating water

digestive system         
  • alt=
  • 3D Medical illustration explaining the oral digestive system
  • Liver and gall bladder
  • The main salivary glands
  • Illustration of small intestine
  • Action of digestive hormones
  • Adult digestive system
  • Lower GI tract - 3) Small intestine; 5) Cecum; 6)  Large intestine
  • Cross section of [[circumvallate papilla]] showing arrangement of nerves and taste buds
  • Cecum and beginning of ascending colon
  • Pancreas, duodenum and bile duct
  • 200px
  • 240px
  • Layers of the small intestine
  • Esophagus shown in yellow passing behind the trachea and the heart
  • Gallbladder shown in green below the liver
  • Arteries and veins around the pancreas and spleen
  • Dietary life rules, Japan, [[Edo period]] Illustrating the ill effects of drinking alcohol on the digestive system.
DIGESTIVE SYSTEM IN HUMANS
Digestive system; The Digestive System; Human Digestion; Alimentary system; Digestion system; Accessory digestive organ; Accessory organs of digestion; Digestive system (Human); Digestive system (human); Human digestive systems; Accessory digestive gland
(digestive systems)
Your digestive system is the set of organs in your body that digest the food you eat.
N-COUNT: usu poss N
Human digestive system         
  • alt=
  • 3D Medical illustration explaining the oral digestive system
  • Liver and gall bladder
  • The main salivary glands
  • Illustration of small intestine
  • Action of digestive hormones
  • Adult digestive system
  • Lower GI tract - 3) Small intestine; 5) Cecum; 6)  Large intestine
  • Cross section of [[circumvallate papilla]] showing arrangement of nerves and taste buds
  • Cecum and beginning of ascending colon
  • Pancreas, duodenum and bile duct
  • 200px
  • 240px
  • Layers of the small intestine
  • Esophagus shown in yellow passing behind the trachea and the heart
  • Gallbladder shown in green below the liver
  • Arteries and veins around the pancreas and spleen
  • Dietary life rules, Japan, [[Edo period]] Illustrating the ill effects of drinking alcohol on the digestive system.
DIGESTIVE SYSTEM IN HUMANS
Digestive system; The Digestive System; Human Digestion; Alimentary system; Digestion system; Accessory digestive organ; Accessory organs of digestion; Digestive system (Human); Digestive system (human); Human digestive systems; Accessory digestive gland
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.
Digestive system neoplasm         
TYPE OF CANCER THAT AFFLICTS THE DIGESTIVE SYSTEM
Digestive system neoplasms
Digestive system neoplasms are tumors which affect the digestive system. There are many different and various pathologic classification for digestive system neoplasms.

Βικιπαίδεια

Digestion

Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes. Mechanical digestion takes place in the mouth through mastication and in the small intestine through segmentation contractions. In chemical digestion, enzymes break down food into the small molecules the body can use.

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. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food; the saliva also contains mucus, which lubricates the food, and hydrogen carbonate, which provides the ideal conditions of pH (alkaline) for amylase to work, and electrolytes (Na+, K+, Cl, HCO3). About 30% of starch is hydrolyzed into disaccharide in the oral cavity (mouth). After undergoing mastication and starch digestion, the food will be in the form of a small, round slurry mass called a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. In infants and toddlers, gastric juice also contains rennin to digest milk proteins. As the first two chemicals may damage the stomach wall, mucus and bicarbonates are secreted by the stomach. They provide a slimy layer that acts as a shield against the damaging effects of chemicals like concentrated hydrochloric acid while also aiding lubrication. Hydrochloric acid provides acidic pH for pepsin. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which is waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes. Pepsin breaks down proteins into peptides or proteoses, which is further broken down into dipeptides and amino acids by enzymes in the small intestine. Studies suggest that increasing the number of chews per bite increases relevant gut hormones and may decrease self-reported hunger and food intake.

When the pyloric sphincter valve opens, partially digested food (chyme) enters the duodenum where it mixes with digestive enzymes from the pancreas and bile juice from the liver and then passes through the small intestine, in which digestion continues. When the chyme is fully digested, it is absorbed into the blood. 95% of nutrient absorption occurs in the small intestine. Water and minerals are reabsorbed back into the blood in the colon (large intestine) where the pH is slightly acidic (about 5.6 ~ 6.9). Some vitamins, such as biotin and vitamin K (K2MK7) produced by bacteria in the colon are also absorbed into the blood in the colon. Absorption of water, simple sugar and alcohol also takes place in stomach. Waste material is eliminated from the rectum during defecation.

Παραδείγματα από το σώμα κειμένου για digestive system
1. The appendix‘s job is to reboot the digestive system in that case.
2. The operation is undeniably dangerous because the digestive system has to be entirely replumbed.
3. Cystic fibrosis is a genetic chronic disease that affects the lungs and digestive system.
4. B–VITAMINS Why you need it B–vitamins are essential components in the body‘s digestive system.
5. Garcia Sabrido‘s specialty is in the digestive system and in transplants.