How does a shark's cardiovascular system differ from that of a mammal?
A) The shark's heart does not directly pump oxygenated blood to the systemic tissues.
B) The shark's heart receives both oxygenated and deoxygenated blood.
C) The shark's circulatory system has a pulmonary and a systemic circuit.
D) The shark's blood is pumped through open-ended tubes.
Correct Answer:
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Q2: Which of these animals has a double
Q3: A heart murmur occurs when there is
Q4: Plasma is where we could find _
Q5: Red blood cells lack nuclei and other
Q6: Trace the path of a red blood
Q7: Blood pressure that is consistently _ or
Q8: Which of these carry(ies)oxygen-poor blood?
A)pulmonary arteries
B)pulmonary veins
C)aorta
D)left
Q9: Why is blood pressure higher during systole
Q10: Blood pressure is lowest in _.
A)veins
B)capillaries
C)arterioles
D)venules
Q11: One type of electrical defect in the
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