Which of the following is an advantage of the
three-chambered heart over the two-chambered
heart?
a. blood flow is faster when there are two
circuits instead of one circuit
b. blood pressure is independently controlled
in each vascular circuit
c. oxygen-rich and oxygen-poor blood do not
mix
d. capillary beds are possible with a threechambered
heart but not a two-chambered
heart
e. more than one of these is an advantage of
the three-chambered heart over the twochambered
heart
A
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