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DIGESTION (Absorption (small intestine (villi (increased SA (increased…
DIGESTION
Absorption
small intestine
villi
increased SA
increased absorption of nutrients
water
sugars
minerals
diffusion
into bloodstream
jejunum
main site of reabsorption
bile
breakdown fats
stored in cells
active transport
large intestine
colon
salts
absorbed into bloodstream
vitamins
absorbed into bloodstream
water
absorbed into bloodstream
Chemical
digestive enzymes
saliva
amylase
stomach
pepsinogen
pepsin
HCI
performs best in acid
gastric juices
++ bolus = chyme
water
HCI
performs best in acid
react w/ food
with increased SA
pancreatic juices
small intestine
breakdown organic molecules
carbs
sugars
proteins
Elimination
liver processes absorbed minerals
detoxifies wastes/blood
balances concentration
produces bile & bilirubin
breakdown heme
reused from damaged blood cells
large intestine
rectum
faecses
anus
peristalsis
Physical
mechanical
chewing (mastication)
teeth
incisor
tear plants
molar
premolars
crush & grind plant matter
canines
flesh
increased SA food
stomach
contract & relax
increased SA of bolus
oesophagus
peristalsis
delivers bolus to stomach