A Benefit of Having at Least a Partial Separation of Pulmonary

Multiple Choice

A benefit of having at least a partial separation of pulmonary and systemic circulation, as found in amphibians, is that

A) oxygenated and deoxygenated blood are separated.
B) blood moving to the body tissues is at a higher pressure than it would be if it had flowed through the lungs first.
C) blood moving to the lungs is at a lower pressure than it would be if it had come directly from the body without flowing through the heart first.
D) blood moving to the body tissues is at a lower pressure than it would be if it had flowed through the lungs first.
E) there are two muscular regions for pumping.