Complete the sentece below⬇☟ the circulatory system is made up of the hearth and the network of (1.)______
that distribute (2)_____ to the body contaning dissolved (3)_____,(4)_____,carbon dioxide, (5)______,and wates
blood flows into the heart through the (6)_____and out of the heart through the (7)______.the flow blood is achieved by the constraction of the ventricels of the hearth,creating a force againts the arterial walls.for this reason,the walls of the arteries are thick and (8)______in order to absorb the blood(9)______.the veins,on the other hand,have thinner walls in as much as most of the pressure is lost in the capillaries.instead,they are equipped with (10)______to prevent the back flow of blood.
Arteries and veins are connected by microscopic tubes called (11)______,its here where dissolved food and gases are exchanged between the blood and the (12)______.
choises:
arties
blood
capillaries
cells
food
pressure
oxygen
elastic
antibodies
tubes
veins
valves
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