Transcript Simon
The Digestive system By: Simon Tetrault http://medical-dictionary.thefreedictionary.com Bibliography http://www.google.com/search?hl=en&safe=active&rlz= 1W1DMUS_enUS209&q=villi&bav=on.2,or.r_gc.r_pw.&bi w=1024&bih=569&wrapid=tlif135974850778110&um=1 &ie=UTF8&tbm=isch&source=og&sa=N&tab=wi&ei=ux0MUeCxJq mLjALm2oBw&surl=1 http://en.wikipedia.org http://www.google.com/sear ch?sourceid=navclient&aq= &oq=mechanical+digestion &ie=UTF8&rlz=1T4DMUS_enUS209 US209&q=bile+duct&gs_l=h p..3.41l6.0.0.0.218735......... ..0. The Mouth The human digestive system is a complex series of organs and glands that processes food. In order to use the food we eat, our body has to break the food down into smaller molecules that it can process; it also has to excrete waste. The Esophagus After being chewed and swallowed, the food enters the esophagus. The esophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements (called peristalsis) to force food from the throat into the stomach. The Stomach The stomach is a large, sack-like organ that churns the food and bathes it in a very strong acid (gastric acid). Food in the stomach that is partly digested and mixed with stomach acids is called chyme. The Small intestine The long, thin winding tube that food goes through after it leaves the stomach. The large Intestine The long, wide tube that food goes through after it goes through the small intestine. The Liver A large organ located above and in front of the stomach. It filters toxins from the blood, and makes bile (which breaks down fats) and some blood proteins. The Appendix The appendix or vermiform appendix; also cecal or caecal appendix; also vermix is a blind-ended tube connected to the cecum, from which it develops embryologically. Pancreas The pancreas is a glandular organ in the digestive system and endocrine system of vertebrates. The Gall Bladder In vertebrates the gallbladder (cholecyst, gall bladder, biliary vesicle) is a small organ that aids mainly in fat digestion and concentrates bile produced by the liver. Enzymes Enzymes are large biological molecules responsible for the thousands of chemicals interconversions that sustain life. Bile Duct A bile duct is any of a number of long tube-like structures that carries bile. Mucus vertebrates, mucus (adjectival form: "mucous") is a slippery secretion produced by, and covering, mucous membranes. Mucous fluid is typically produced from mucous cells found in mucous glands. Chemical Digestion Digestion is the mechanical and chemical breakdown of food into smaller components that are more easily absorbed into a blood stream, for instance. Mechanical Digestion The digestive system is of vital biological importance to the body. Without the ability to process foods, extract nutrients, and eliminate waste, every part of our body would cease to function. Salivary Amylase Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylase is present in human saliva, where it begins the chemical process of digestion. Absorption Absorption (chemistry), absorption of particles of gas or liquid in liquid or solid material. Absorption (skin), a route by which substances can enter the body through the skin. Absorption (pharmacokinetics), absorption of drugs in body. CO2 scrubber, the absorbent in a rebreathe. Villi Intestinal villi (singular: villus) are small, finger-like projections that protrude from the epithelial lining of the intestinal wall. Gastric Juices Gastric acid is a digestive fluid, formed in the stomach. It has a pH of 1.5 to 3.5 and is composed of hydrochloric acid (around 0.5%, or 5000 parts per million) as high as 0.1 N[1], and large quantities of potassium chloride and sodium chloride. Duodenum The duodenum is the first section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds. Chyme Chyme, "juice"[1][2]) is the semi fluid mass of partly digested food expelled by the stomach into the duodenum.[3] Anus The anus is the place were your digested food goes.