In an Open Circulatory System, Blood Is ________

question 18

Multiple Choice

In an open circulatory system, blood is ________.

• A) always inside of vessels and is under higher pressure than in closed circulatory systems
• B) not always confined to blood vessels and is under higher pressure than in closed circulatory systems
• C) always inside of vessels and is under lower pressure than in closed circulatory systems
• D) not always confined to blood vessels and is under lower pressure than in closed circulatory systems

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