Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 49 - The Circulatory System - Review Questions - Understand: 2

Answer

B.

Work Step by Step

A. lists the wrong node, while C. and D. list later steps, not the one which begins heart function.
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