Which of the following factors is most important in forcing blood flow through veins?
A) heart rate
B) stroke volume
C) muscular activity
D) blood velocity
E) valve opening
Correct Answer:
Verified
Q19: Which of the following is the blood
Q20: Where is the cardiovascular center located?
A) in
Q21: Which of the following would be the
Q22: Which type of capillary wall is commonly
Q23: Which of the following vessels supplies blood
Q25: Which of the following hormones would NOT
Q26: Which of the following vessels is a
Q27: What does this figure represent? 
Q28: All the veins of the systemic circulation
Q29: Where is the metarteriole?
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