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.
Biology (11th Edition)
by Raven, Peter; Johnson, George; Mason, Kenneth; Losos, Jonathan; Singer, Susan
Published by
McGraw-Hill Education
ISBN 10:
1259188132
ISBN 13:
978-1-25918-813-8
Chapter 49 - The Circulatory System - Review Questions - Apply - Page 1039: 1
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