★ Circulatory & Respiratory Quiz
Blood vessels that are only one cell thick
A. arteries
B. veins
C. capillaries
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Which is the correct definition of the Circulatory system?
A. The system fights disease so the body stays healthy.
B. The system that circulates blood and oxygen through the body, consisting of the heart,blood vessels,and blood.
C. Breaks down food into smaller pieces and absorbs those nutrients into the body.
D. Provides shape and structure for the body.
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