The heart begins beating in the fetus at about what stage of development?
A) Fourth month
B) Second month
C) After about 4 weeks
D) After about 2 weeks
Correct Answer:
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Q140: The pulmonary arteries carry blood to the:
A)
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Q144: Cuspid valves open into:
A) the aorta.
B) the
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A)
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Q148: Semilunar valves open into:
A) the aorta.
B) the
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