Digestion and Nutrition
Terms
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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
- What is the function of the illum
- additional absorbtion
- 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