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(How do we breathe image, What happens to the food we ea image t, How…
How do we breathe
The exchange of gases in the body
oxigenated blood
carbon dioxide
oxigen
How our diagram
ribcage
diaphragm
lungs
The respiratory system
mouth
trachea
nose
What happens to the food we ea
t
The stages of digestion
propulsion
defecation
ingestion
The digestive system
food bolus
tonge
teeth
How does the body clean blood
The urinary system
renal veins
bladder
kidneys
The sweat glands
dermis
pores
epidermis
Why does the heart beat
The circulatory system
plasma
red blood cells
white blood
Blood circulation
pulmonary
artery
vena cava
