In which vertebrate group are there two atria but only a single ventricle?
A) fishes
B) crocodiles
C) some reptiles
D) birds
E) mammals
Correct Answer:
Verified
Q13: Which of these animals have four-chambered hearts?
A)all
Q14: What is the advantage of a closed
Q15: Which heart chamber is the most muscular?
A)right
Q16: In vertebrates, which heart chamber supplies oxygenated
Q17: All of the following are components of
Q19: In mammals, blood with a low oxygen
Q20: The aorta:
A)is a major artery.
B)is a major
Q21: The _ valve is between the right
Q22: Ventricles force blood directly into the:
A)veins.
B)arteries.
C)capillaries.
D)arterioles.
E)venules.
Q23: The average red blood cell lives for
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