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A
B
C
D
E
F
I
L
N
O
P
R
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U
V
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A
Is the second stage of the digestive process
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B
The heart expels ........
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C
There are very narrow vessels that connect arteries and veins
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D
Is the first stage of the digestive process
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E
Is the third stage of the digestive process
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F
........ are formed in the large intestine
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I
During ........,your diaphragm contracts
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L
In this route the oxygen goes and comes back to the lungs
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N
The digestive system transform the food into .....
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O
We need this to survive
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P
Blood consists of ...... and blood cells
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R
We take oxygen and releases carbon dioxide
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S
The heart contracts and sends blood trough the arteries
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U
The excretory system consists in ......... .......... and the sweat glands
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V
The gas exchange takes place in the .......