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

question 46

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, in which gas exchange in all cells occurs directly with the external environment.
• E)that of humans, in which there are four pumping chambers to drive blood flow.

Explain the effects of changes in government spending, taxes, and other variables on the aggregate demand and supply curves.

Identify the role of expectations in influencing the aggregate demand and supply curves, particularly through anticipated changes in the price level.

Explain the implications of changes in national income components on GDP using the expenditures approach.

Comprehend the theories behind sticky prices and wages and how they affect the short-run aggregate supply curve.

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