science 2 Flashcards
what is the liver
produces bile which breaks large globs of oil into small globules of fats and oil (lipids)
what is immiscible
two liquids which do not mix (oil and water)
what is emulsifier
a substance that comboines two immobile liquids such as oil and water, baked goods and lethisin, chyme and bile, mayo and eggs
what is emulsion
two immiscible liquids + an emulsifier when the chyme
what are gallstones
Crystals of bile which can block the bile duct
Can be shattered with sound waves of the correct frequency
what is the pancreas
located under the stomach
has the pancreatic duct which is plugged into the same place as the bile duct
has gland which produces a digestive juice called pancreatic juice is 97% water and 3% enzyme Pancreatic amylase continues carbohydrate chemical digestion
Pancreatic lipase starts the chemical digestion of lipids (fats and oils)
Pancreatic trypsin continues the chemical digestion of protein
what is the small intestine (s.i.)
between 15’ and 18’ feet long
in the first 1/3 of the small intestine, digestion is completed
there are intestinal glands in the first 1/3 which produce intestinal juice
Intestinal juice is made up of 97% water and 3% enzymes (intestinal amylase, lipase, and trypsin)
Intestinal amylase completes carbohydrate digestion
Intestinal lipase completes lipid digestion
Intestinal trypsin completes protein digestion
what happens in the large intestine
Made of involuntary muscle 8’-9’ ft long
What’s left in the chyme?
Bacteria, bile, fiber, {vitamins, minerals, water are absorbed by the capillaries of the large intestine}
Fiber- cellulose cell walls from plants (fruits, grains, vegetables) good because it gives bulk to the chyme to make peristalsis easier to squeeze the chyme
The chyme becomes a brown (because of the bile) semisolid