Biological Science (6th Edition)

Published by Benjamin Cummings
ISBN 10: 0321976495
ISBN 13: 978-0-32197-649-9

Chapter 45 - Animal Movement - Review - Page 959: 3

Answer

A

Work Step by Step

A contraction of a muscle will correspond to the relaxation of another. In both endoskeletons and exoskeletons, antagonistic muscle groups are flexor and extensor. For hydrostatic skeletons, longitudinal contractions correspond to circumferential relaxation
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