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19 Cards in this Set

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3 Parts of the Small Intestine
Duodenum
Jejunum
Ileum
Duodenum
about 30cm this is where the chyme is buffered and where the pancreatic enzymes and bile are added to the chyme
Jejunum
2 1/2meters or 9ft. long. This is where the absorbtion of everything but water takes place
Ileum
3meters This is the finishing of the absorption that didnt happen in the Jejunum
Surface Area of small intestine
3300cm2, because it has folds and villi it has over 2million cm2 or (2200ft2)
Villi contain...
lacteals
lacteals
specialized lymphatic capillaries, molecules that are too big are moved out of chyme and moved to the lacteals-fats and lipids
Pancreas
only organ that has endocrine and exocrine functions, secretes hormones into the interstitial spaces, insulin, somatasion, glucagon which regulates blood sugar
pancreas enzymes
protease-breakdown proteins
Lipase-breakdown lipids
carbohydrase- breakdown carbs
Liver
over 200 vital functions, breakdown of categories
1.metabolic regulation-excracting absorbed nutrients and/or toxins from blood processing to be readily used or excreted
2.hematologic regulation-synthesizes blood proteins, especially albumins
3.bile production-synthesizes and creates bile
Funtional unit is the lobule, which is able to replace itself
Lobules
made up of sinusoids and hepaticites
Bile
mixture of water, ions and bile salts the water and ions are used to buffer the chyme, bile salts are synthesized from chloesterol for normal digestion of fats
Gallbladder
1.Bile storage
2.Bile modification
Emulsify
you can cover a droplet of non-polar molecules with bile salts (which are part polar and part non-polar) when surrounding the droplets they then can dissolve into water
Large Intestine
colon function-dehydrate the chyme-most water absorption occurs here, it recieves the chyme through the ileocecal valve which controls the chyme to the cecum
Cecum
veriform appendix
The large intestine colons
Ascending Colon-right side, spends a lot of time here because of gravity, most water absorption occurs here
Transverse Colon-across
Descending Colon-downwars
Sigmoid Colon-leads to rectum
Colorectal Cancer
extremely high death rate unless caught early
Feces
75% water 5%bacteria 20% indigestible materials and inorganic type stuff