The simplest animals with a closed circulatory system are
A) birds.
B) amphibians.
C) annelids.
D) fishes.
E) reptiles.
Correct Answer:
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Q10: The upper chambers of the mammalian heart
Q11: The large vessels that carry blood to
Q12: The walls of the right ventricle are
Q13: Vertebrates with a four-chambered heart include
A) fishes.
B)
Q14: The largest artery in the body is
Q16: Blood
A) is a liquid connective tissue.
B) delivers
Q17: Vertebrates with a two-chambered heart include
A) mollusks.
B)
Q18: Each day the human heart sends a
Q19: Blood that reaches the heart tissue via
Q20: If you exercised more and more intensely
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