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Digest Syst

digestive system known as the gastrintestinal system, is responsible for the physical and chemical breakdown of food so that it can be taken into the bloodsream and used by body cells and tissues
alimentary canal a long muscular tube that begins at the mouth and includes the mouth (oral cavity), pharynx, esophagus, stomach, small intestine, large intestine, and anus
mouth (buccal cavity), recieves food as it enters the body
teeth special structures in the mouth that physically breakdown food chewing and grinding (mastication)
tongue a muscular organ that contains special receptors called taste buds
hard palate the body structure that forms the roof of the mouth and separates the mouth from nasal cavities`
soft palate which separates the mouth from the naso pharynx
salivary glands 3; the parotid, sublingual, and submandibular, produce a liquid called saliva
pharynx throat; a tube that carries both air and food
esophagus the muscular tube dorsal to (behind) the trachea
peristalsis the esophagus relies on a rhythmic, wavelike, involuntary movement of its muscles to move the food in a forward direction
stomach an enlarged part of the alimentary canal (rugae- the mucous membrane lining of the stomach contains folds)
small intestine a coiled section of the alimentary canal
duodenum the first 4 to 10 inchs of the small intestine
jejunum approximately 8 ft in length and forms the middle section of the small intestine
villi fingerlike projections in the walls of the small intestines
large intestine the final section of the alimentary canal
vermiform appendix` small intestine contains a small projection
colon several divisions
rectum the final 6 to 8 inchs of large intestine and is a storage area for indigestibles and wastes
anus narrow canal which opens at a hole
liver the largest gland in th ebody and is accessory organ to the digestive system
gallbladder a small, muscular sac located under the liver and attached to ot by connective tissue
pancreas a glandular organ located behind the stomach
Created by: Irismay07