Studied by 10 people
amylase
enzyme found in mouth that causes chemical digestion
catalyst
a substance that speeds up chemical reaction, can be used again + again
digestion
break down of large food molecules into smaller molecules
enzymes
type of catalyst found in living organisms, made of protein
peristalsis
where food moves through the esophagus
name the whole digestive system
mouth, windpipe, epiglottis, salivary glands, esophagus, stomach, pancreas, gallbladder, liver, large intestine, small intestine, duodenum, rectum, anus
mouth
chew food, enzymes, break down food
salivary glands
produces amylase
epiglottis
open and closed windpipe when you swallow
windpipe
leads to respritory system
esophagus
carries food from mouth to stomach
stomach
stores + churns food, acid softens food + kills bacteria
liver
makes bile for fat digestion, stores vitamins + minerals, removes toxins, breaks down fat
gallbladder
stores bile
pancreas
makes enzymes amylase + lipase
duodenum
first part of small intestine
large intestine
reabsorbs water into the blood stream, forms + stores faeces, contains good bacteria help provide vitamins b + k
small intestine
absorption of nutrients
rectum
stores + removes faeces
anus
end of digestive canal, faeces exit
stages of human digestion
ingestion, digestion, absorption, assimilation, egestion
ingestion
food enters alimentary canal when it is placed in the canal
digestion
complex food molecules become simple
absorption
molecules pass through intestines into blood
assimilation
nutrients put to use
egestion
waste removed + exits
enzymes e.g
starch to maltose
why is it important for teeth
break down food so more surface area for amylase
how much food can the stomach hold
2L
what chemicals are in the stomach
enzymes + hydrochloric acid
what is the stomach layered with
mucus, prevent acids + enzymes damaging wall
how long is the small intestine
6M
what percentage of digestion occurs in the small intestine
90%
duodenum use
chemical digestion, produce digestive enzymes
diffusion
nutrients entering small intestine + broken down small enough to pass through walls of the intestine
villi
covers small intestine with small folds, one cell thick, own capillaries, nutrients to circulatory system
pancreas juice
pancreatic juice
large intestine length
1.5M
how long does the LI hold food
10h - a few days
Note 
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