6. Which of the following staternents is not true about the heart?
a. It has valves that prevents the blood from flowing backward.
b. Different parts of the heart contract at the same time.
c. It is about the size of a fist.
d. It has four chambers
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2
Answer:
option.c.about size of a fist
Answered by
1
Answer:
b. Different parts of the heart contract at the same time.
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