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the breaking down of food into smaller fragments
digestion
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the passage of digested materialf from the walls of the alimentary canal into the blood or lymph
absorption
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the digestive tract from mouth to anus
alimentary canal
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oral cavity; where digestion begins
mouth
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the organs of mastications, designed to cut, tear, and grind ingested food so it can be mixed with saliva and swallowed
teeth
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solid mass of skeletal, covered by a mucous membrane, helps keep food between teeth when chewing while mixing with saliva
tongue
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a fluid produced by exocrine glands, contains salivary amylase
saliva
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ball of food that is swallowed from the mouth to the pharynx
bolus
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a short muscular tube where the food goes when it leaves the mouth
pharynx
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a muscular tube that connects the pharynx to the stomach
esophagus
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wave like muscle contractions of the alimentary canal that serves as the major means of propulsion of food throughout the digestive tract
peristalsis
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a ring of muscle tissue hwere the esophagus connects to the cell
cardiac sphincter
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a bag-like organ that holds and digests for 3-4 hours
stomach
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juices produced by gastric gland that helps break down food
gastric juice
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a creamy paste that food turns into when its leaving the stomach
chyme
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a tube that the chyme squirts through into the duodenum
pyloric sphincter
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largest gland in the body and is under the diaphragm; holds amino acids until needed
liver
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a pear shaped muscular organ that stores bile until needed and is where most water is absorbed
gallbladder
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liquid secreted by the liver and is stored in teh gallbladder until its needed
bile
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pink narrow gland that is next to the duodenum and helps complete digestion
pancreas
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muscular tube where digestion is complete, and virtually all absorption takes place
small intestine
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located under the stomact where proteins and lipids are digested; first 10-12 incehes of small intestines
duodenum
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long tube between the duodenum and ileum where chemical digestion and absorption take place; 6-8 ft long second part
jejunum
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where digestion and absorption slow down; 9-12 ft long final part
ileum
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fingerlike projections that line small intesine that greatly increase surface area for absorption
villi
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shorter that small intestine; 5-6 ft long and has 3 parts
large intestines
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small finger size tube, has no function of digestive process may serve as a bacteria breeding ground
appendix
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1st part of large intestine
cecum
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last 6-8 inches of large intestines
rectum
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opening to the exterior of body, where feces exit
anus
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Bacteria that live in large intestines, help break down fats that aren't broken down by enzymes.
intestinal flora
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What are the 5 major parts of the large intestine?
cecum, rectum, colon, appendix, and anal canal
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What are the 4 sections of the colon?
ascending, transverse, descending, and sigmoid
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What is the function of mucus in the stomach?
to keep gastine fluids from eating stomach lining
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What is the function of the digestive enzymes within the digestive system?
help breakdown food and absorb nutrients
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