Which Statement About Circulatory Systems Is False

question 94

Multiple Choice

Which statement about circulatory systems is false?

• A) Arthropods and mollusks have open circulatory systems.
• B) Vessels return hemolymph to the mollusk heart.
• C) In the arthropod heart, hemolymph flows into the heart through ostia when the heart relaxes and out of the same ostia when the heart contracts.
• D) Ostia have valves that help regulate the flow of hemolymph.
• E) Arthropods have a tubular heart running along the dorsal surface.

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