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Pre-Test
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1
Which of the following is not classified as a type of blood vessel?
A)capillaries
B)arteries
C)vein
D)lymph nodes
2
The _____ are considered small arteries just visible to the naked eye.
A)venules
B)arterioles
C)veins
D)capillaries
3
_______ are considered small veins that drain blood from the capillaries
A)Arterioles
B)Venules
C)Veins
D)Lymphatic vessels
4
In veins of the lower extremities, ______ serve to help circulating blood defy gravity and travel upward to the heart.
A)arterioles
B)venules
C)valves
D)synapses
5
The heart is surrounded by a thick, membranous sac that serves to support and protects the heart. This sac is known as the ___.
A)myocardium
B)epicardium
C)pericardium
D)septum





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