Transcript Rene
Digestive System By Rene Carmona Mouth • Cavity bounded on the outside by the lips and inside by the oropharynx and containing in higher vertebrates the tongue, gums, and teeth. • Cavity regarded source sounds and speech Esophagus • The muscular membranous tube for the passage of food from the pharynx to the stomach; the gullet Small Intestine • The narrow, winding, upper part of the intestine where digestion is completed and nutrients are absorbed by the blood. It extends from the pylorus to the cecum and consists of the duodenum, the jejunum, and the ileum. Stomach • The stomach is a muscular, hollow, dilated part of the digestion system which functions as an important organ of the digestive tract in some animals, including vertebrates, echinoles, insects, and the molles. It is involved in the second phase of digestion, following mastication . Large Intestine • The portion of the intestine that extends from the ileum to the anus, forming an arch around the convolutions of the small intestine and including the cecum, colon, rectum, and anal canal. Liver • A large, reddish-brown, glandular vertebrate organ located in the upper right portion of the abdominal cavity that secretes bile and is active in the formation of certain blood proteins and in the metabolism of carbohydrates, fats, and proteins. Appendix • A supplementary or accessory part of a bodily organ or structure Pancreas • A long, irregularly shaped gland in vertebrates, lying behind the stomach, that secretes pancreatic juice into the duodenum and insulin, glucagon, and somatostatin into the bloodstream. Gall Bladder • A small, pear-shaped muscular sac, located under the right lobe of the liver, in which bile secreted by the liver is stored until needed by the body for digestion. Enzymus • any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion. Bile/ Bile Duct • Any of the excretory passages in the liver that carry bile to the hepatic duct, which joins with the cystic duct to form the common bile duct opening into the duodenum. Mucus • The viscous slippery substance that consists chiefly of mucin, water, cells, and inorganic salts and that is secreted as a protective lubricant coating by the cells and glands of the mucous membranes. Chemical Digestion • The process by which food is converted into substances that can be absorbed and assimilated by the body, especially that accomplished in the alimentary canal by the mechanical and enzymatic breakdown of foods into simpler chemical compounds. Absorption • normal assimilation by the tissues of the products of digestion the passsage of a gas, fluid, drug through the mucous membranes or skin Mechanic Digestion • Mechanical digestion is when your body physically breaks down the food you eat into smaller pieces. When you chew your food you are mechanically digesting your food. When your food is digested and broken down in your stomach it is considered chemical digestion. Salivary Amylase • Any of a group of enzymes that catalyze the hydrolysis of starch to sugar to produce carbohydrate derivatives. Villi • Villi, the singular of which is villus, are finger-like projections in the small intestine that help absorb food more efficiently in the body. The small intestine is an organ in the body in which most digestion occurs. Food entering into the body is liquefied and partially digested in the stomach. It then passes into the small intestine. The villi are the parts that absorb nutrients from food and pass them into the bloodstream. Gastric Juices • 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 first part of the small intestine, between the stomach and the jejunum Chyme • The thick semifluid mass of partly digested food that is passed from the stomach to the duodenum Bibliography http://www.google.com/