Florida Science Grade 6

Section 2: Circulation

Circulation

1.
Where does the exchange of food, oxygen, and wastes occur?
A)capillaries
B)arteries
C)trees
D)lymph vessels
2.
Where is blood under the greatest pressure?
A)in the arteries
B)in the veins
C)in the capillaries
D)in the lymph vessels
3.
Which of these is a cause of cardiovascular disease?
A)smoking
B)asbestos exposure
C)jogging
D)ultraviolet radiation
4.
Which of these systems collects and returns fluid to blood?
A)the lymphatic system
B)the respiratory system
C)the circulatory system
D)the endocrine system
5.
The blood vessels that carry blood back to the heart are called _______.
A)veins
B)arteries
C)capillaries
D)pulmonaries
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