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 - Apply: 1

Answer

A.

Work Step by Step

B. is wrong since the direction from which motor neurons originate is not relevant, nor is gravity (C.). D. contradicts the basic question and, so, is also incorrect.
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