The Circulatory System of Bony Fishes, Rays, and Sharks Is

question 36

Multiple Choice

The circulatory system of bony fishes, rays, and sharks is similar to

• A) that 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) that of reptiles, with one pumping chamber driving blood flow to a gas-exchange organ, and a different pumping chamber driving blood to the rest of the circulation.
• D) that of sponges, where gas exchange in all cells occurs directly with the external environment.
• E) that of humans, where there are four pumping chambers to drive blood flow.

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