SCIENCE BODY SYSTEMS

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	9									10


					11		12

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	15			16

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19

Across
1.	A cell with a potentally harmful virus.
6.	Cells that fight disease.
9.	The lower chambers of the heart.
12.	1% of the blood is this.
14.	Includes the heart, blood, and blood vessels.
15.	A part of the body that carrys out a certian function.
18.	The system that breaks down food.
19.	The liquid part of the blood (mostely water.)

Down
2.	The system that includes certain glands.
3.	The system that includes the lungs.
4.	The breaking down of food in the body.
5.	Cells that carry oxygen.
7.	Where gas exchange occurs in the body.
8.	The system that removes wastes from the body.
10.	The system that alerts the body of certain changes.
11.	Carrys blood away from the heart.
13.	Helps clott blood.
16.	The upper chambers of the heart.
17.	Carrys blood to the heart.

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