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The circulatory system transports many important substances such as oxygen and nutrients. Which of the following helps keep the blood flowing normally? a. hemoglobin in the bloo…

The circulatory system transports many important substances such as oxygen and nutrients. Which of the following helps keep the blood flowing normally? a. hemoglobin in the bloo…
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The circulatory system transports many important substances such as oxygen and nutrients. Which of the following

helps keep the blood flowing normally?
a. hemoglobin in the blood
b. muscular walls of the arteries
c. nutrients in the blood plasma
d.oxygen content of the blood

asked
User Robert Langdon
by
7.0k points

1 Answer

3 votes

Answer:

the answer is b. muscular walls of the arteries

Step-by-step explanation:

answered
User Franco Torres
by
8.2k points
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