Transcript Sarah
The Digestive System By Sarah C. The Mouth The mouth is where the digestive system starts. The mouth chews your food and transfers it to the next part of your body Esophagus The esophagus conveys boluses of food from the pharynx. The esophagus is routinely exposed to rough and abrasive foodsuffs. The Stomach The stomach is a muscular organ on the left side of the upper abdomen. The stomach secrets acid and enzymes. The Liver The liver cleans your blood, it produces bile, and it stores glycogen. Large intestine The large intestine consists of the cecum and colon. The Small intestine The small intestine is a tubular structure that carries the food in continuation with the stomach. Gall Bladder The gall bladder stores bile until the body needs it. Pancreas The pancreas creates hormones and enzymes. Appendix Scientist think that the appendix was used to digest bones. Enzymes Enzymes are globular proteins. They have something called an active site. The site is a “lock” into which a substrate “key” fits. Bile Duct A large duct that transports bile from the liver to the duodenum. Mucus Mucus is a slimy substance, typically not miscible with water, secreted by mucous membranes. Chemical digestion Chemical digestion is the chemical breakdown of food into simpler compounds. Mechanical digestion Mechanical digestion is the first step in digesting the food you eat. Salivary amylase Salivary amylase is saccharidase that is found in small quantities of human blood. Absorption Absorption, the process by which matter or radiant energy is taken up internally, or assimilated ,by a substance. Villi Villi is a microscopic finger-like projections that line the inner wall of the small intestine. Gastric juices Gastric juices are the colorless, watery, acidic digestive fluid that is secreted by various glands in the mucous membrane of the stomach and consists chiefly of hydrochloric acid, pepsin, rennin, and mucin. Duodenum The duodenum precedes the jejunum and ileum and is the shortest part of the small intestine. Chyme Chyme also known as chymus, it is the liquid substance found in the stomach before passing through the pyloric valve. Bibliography http://dictionary.reference.com/browse/bile-duct http://www.academickids.com/encyclopedia/index.php/Gallbladder http://kidshealth.org/kid/htbw/liver.html http://www.news-medical.net/health/What-Does-the-Small-Intestine-Do.aspx http://www.google.com/search?q=digestive+system+images&hl=en&safe=active&tbo=d&rlz=1W1DMUS_enUS209&source=lnms&tbm=isch&sa=X&ei=axXvUK6WG5H2ioCwCQ&ved= 0CAcQ_AUoAA&biw=1024&bih=569&surl=1 http://www.webmd.com/digestive-disorders/picture-of-the-stomach http://encyclopedia.kids.net.au/page/am/Amylase http://answersyahoo.com/question/index?qid=20090105154600AAzJ1xb http://sciencehowstuffworks.com/absorptioninfo-htm http://celiacdiseaseabout.com/od/celiacdiseaseglossary/g/Villi http://www.hns.org.uk/bio/index.php?option=com_content&view=article&id=123 http://en.wikipedia.org/wiki/Duodenum http://en.wikipedia.org/wiki/Chyme THE END