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16 Cards in this Set

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  • Back
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what is a duodunm
recieves chyme from stomach and digestive sectertions from pancreas and liver
What does the liver produce
bile and fats
why are intestinal villi and micro villi important
they increase the absorbtion area by a factor of 600
What is the function of the large intestine
reabsorbtion of water, absorbs vitamin K, biotin. Bs from bacteria in colon
What is chyme
A thick liquid which helps to break down food in the stomach and kill pathogens which enter with the food
the stomach mby waves of concentration and relaxation called what
peristalsis
what is and incomplete digestive sysmtem
a saclike, branching gut caviety having a single opening at the start of a tubular pharynx, and food exits through the same opening
flatworms, cnidarians and a few other small invertabrates have these
What is the function of the illum
additional absorbtion
it is part of the small intestine
What is a complete digestive system
a tube with an opening at one end for taking in food and an opening at the other end for eliminating food
The three products of gastric glands
1) mucus
2) hydrochloric acid
3)pepsinogen
deifne ingenstive feeders
organisms which have mouth parts and eat their food.
define absorptive feeders
Organisms which do not have mouth parts, but instead absorb their food
Ingestive feeders have either a what or a what digestive system
complete or incomplete
what are the four stages of food processing
1) ingestion
2) digestion
3) absorbtion
4) elimination
functions of saliva
- lubricate food to be swallowed
- certain enzymes kill germs
- begin breaking down carbs
what is the function of a JeJunum
Where most of the digestion and absorbtion happens