The Circulatory Systems of Bony Fishes, Rays, and Sharks Are

question 35

Multiple Choice

The circulatory systems of bony fishes, rays, and sharks are most similar to ________.

• A) those of birds, with a four-chambered heart
• B) the portal systems of mammals, where two capillary beds occur sequentially, without passage of blood through a pumping chamber
• C) those of sponges, where gas exchange in all cells occurs directly with the external environment
• D) those of humans, where there are four pumping chambers to drive blood flow

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