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digestive system#1
key term
| Question | Answer |
|---|---|
| digestive system | the gastrointestinal system,resposible for the physical and chemical breakdow of food so that it can be take into the bloodstream and used by body cell and tissues. |
| alimentary canal | long muscular tube that begings at the mouth and indudes the mouth pharynx,esophagus,stomach,small intestine and anus |
| mouth | the bucal cavity,recives food as it enters the boby |
| teeth | special structures in the mouth that physically break down food by chewing. |
| tongue | muscular organ that contains special recepors(tastebuds,taste sweet,salt,sour,and bitter sensations |
| salivary glands | the parotid sublingual and submandibilar produce a liquid "saliva" |
| pharynx(throat) | The tube that connects the mouth to the internal body cavity in which food is digested. |
| esophagus | the muscular tude dorsal to (behind)the trachea and receives the bolus from pharyxn and cares the bolus the stomach |
| peristalsis | rhythmic,wavelike motion of involuntay muscle |
| stomach | enlarged and dilated part of the alimentar canal |
| small intestine | coiled section of the alimentary canal ;is where the vast majority of digestion and absorption of food takes place. |
| anus | external opening of the anal canal o rectum |
| pancreas | gland that is dorsal to the stomach and that secrete insulin and digestive juices |
| liver | the largest gland inthe body and is an accessory organ to the digestive system;functions including detoxification, protein synthesis, and production of biochemicals necessary for digestion |
| gallbladder | small,muscular,sac locacated under the liver and attached to it by conective tissue |
| rectum | is the final six to eight inches of the larges instines and is a storages area for indigestible and wastes |
| large intestine | the final section of the alimentrary canal,Its function is to absorb water from the remaining indigestible food matter, and then to pass useless waste material from the body. |
| colon | last part of the digestive system;it extracts water and salt from solid wastes before they are eliminated from the body,absorb water, potassium and some fat soluble vitamins |
| vermiform appendix | contains a small projection,blind-ended tube connected to the cecum from which it develops embryologically. |
| jejunum | eight feet on length and forms the middle section of the small intestine |
| duodenum | first nine to ten inches of the small intestine.bile fromthe gallbladder and liverand parcreatic juice enter this section through ducts or tube |
| ileum | final section of the small intestine,the fuction is absorb vitamin B12 and bile salts and whatever products of digestion were not absorbed by the jejunum. |
| villi | come out from the wall of the small intestine and have additional extensions called microvilli, increases the surface area so there are more places for food to be absorbed. |
| hard palate | thin horizontal bony plate of the skull, located in the roof of the mouth. It spans the arch formed by the upper teeth. |
Created by:
judith_2
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