Chapter 34 The Circulatory Respiratory and Excretory Systems
Chapter 34 The Circulatory Respiratory and Excretory Systems
Chapter 34 The Circulatory Respiratory and Excretory Systems
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<strong>Chapter</strong> <strong>34</strong><br />
<strong>Circulatory</strong>, <strong>Respiratory</strong>, <strong>and</strong> <strong>Excretory</strong> <strong>Systems</strong><br />
<strong>Chapter</strong> Diagnostic<br />
Questions<br />
True or False<br />
Only veins have valves to prevent backward<br />
flow of blood.
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