The simplest animals with a closed circulatory system are
A) mollusks.
B) amphibians.
C) annelids.
D) fish.
E) reptiles.
Correct Answer:
Verified
Q7: Vertebrates with a three-chambered heart include
A) fish.
B)
Q10: At the emergency room where you work,a
Q11: The large vessels that carry blood to
Q11: Each day the human heart sends a
Q12: The tough connective tissue sac surrounding the
Q17: The middle layer of the wall of
Q18: Vertebrates with a four-chambered heart include
A) fish.
B)
Q19: The capillary wall consists only of
A) a
Q20: A patient has a problem with semilunar
Q35: A heartbeat begins in the
A) atrioventricular valve.
B)
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