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Inside your body there are three types of ____________________ vessels :
Veins :
These are the vessels wich carry blood ____________________ your heart .
Capillaries :
These are very ____________________ vessels that connect arteries and ____________________ . They allow rhe exchange of gases and substances to take place in the ____________________ .
Arteries :
These are the vessels wich carry blood ____________________ ____________________ your ____________________ .