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The valves of the heart and veins are similar in that they both _____. a.) prevent the backflow of blood b.) act as propellers to move blood forward c.) prevent blood from flowing too quickly d.) are made
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The valves of the heart and veins are similar in that they both _____.

a.) prevent the backflow of blood
b.) act as propellers to move blood forward
c.) prevent blood from flowing too quickly
d.) are made of rigid cartilage

User Pramod Setlur
by
8.7k points

2 Answers

3 votes
D I think Is the answer
User MWD
by
8.6k points
4 votes
I think D. are made of rigid cartlage
User Drew Johnson
by
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