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science (Chemistry (gasses (Carbon dioxide, Oxogen), Atoms, chemical…
science
Biology
Breathing and circulation
the resperatory system
the lungs
mouth
the Circulatory system
the heart
arteries
muscle walled tubes transporting oxygenated blood around the body
veins
tubes transporting deoxygenated blood back to the heart
capilaries
fine branching blood vessels transfering the oxygen out of the blood and into the muscle/organs
has 4 sections and is muscle
right ventricle
oxygen poor blood
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left atrium
oxygen rich blood
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right atrium
oxygen poor blood
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left ventricle
oxygen rich blood
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the lungs
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food and digestion
digestive system
mouth
this is where food is mixed and chewed. an enzyme called amylase (saliva) breaks down starch
oesophagus
tube that transports food to stomach using muscles
liver
uses bile which helps break down fat
pancreas
produces digestive enzymes
large and small intestines
small = final enzyme brake down + absorbed food molecules into blood stream. Large = passes water into blood leaving solid waste
anus
excretes solid waste
stomach
stores food and mixes with digestive juices. uses acid to kill bacteria
fuel for energy
some food is high energy. needed for warmth + muscle moving
raw materials + growth
most food + new or repaired cells
different food = different substances. we need a variety of substances
porridge = low glycaemic. sweets = high glycaemic
carbahyydrates
there are many types of carbs. they give energy
sugar
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starch
starch = bigger than sugar. bread potatoes + cereals.
fibre
huge undigestable carb. it helps move waste through are intestines.
examples of sugars
Lactose
dairy milk
Sucrose
table sugar
Fructose
fruit
Glucose
instant sugar
Chemistry
gasses
Carbon dioxide
Oxogen
Atoms
chemical reactions
Physics
