A Portal System Is

question 13

Multiple Choice

A portal system is

• A) an area connecting arterioles to venules.
• B) a series of vessels that returns blood to the heart in an animal with an open circulatory system.
• C) a space within or between organs where blood is allowed to pool.
• D) a slightly muscular vessel that has minimal pumping action in an organism with no heart.
• E) a vessel or vessels connecting two capillary beds.

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Definitions:

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