One advantage of the three-chambered heart over the two-chambered heart is that ____.
A) oxygen-rich and oxygen-poor blood do not mix
B) blood pressure is independently controlled in each vascular circuit
C) blood flow is faster when there are two circuits instead of one
D) capillary beds are possible with a three-chambered heart but not a two-chambered heart
E) oxygen-rich and oxygen-poor blood mix

Question

One advantage of the three-chambered heart over the two-chambered heart is that ____.​
A) oxygen-rich and oxygen-poor blood do not mix​
B) ​blood pressure is independently controlled in each vascular circuit
C) ​blood flow is faster when there are two circuits instead of one
D) ​capillary beds are possible with a three-chambered heart but not a two-chambered heart
E) ​oxygen-rich and oxygen-poor blood mix

Quizplus · Accepted Answer

A three-chambered heart allows for two separate circuits (pulmonary and systemic), which can increase the efficiency and speed of blood flow compared to a single circuit in a two-chambered heart.

One Advantage of the Three-Chambered Heart Over the Two-Chambered Heart