Human Anatomy & Physiology (9th Edition)

Published by Pearson
ISBN 10: 0321743261
ISBN 13: 978-0-32174-326-8

Chapter 9 - Muscles and Muscle Tissue - Review Questions - Page 317: 3(6)

Answer

(a) thick

Work Step by Step

The central thick filaments containing myosin extend the entire length of the A band. They are connected in the middle of the sarcomere at the M line. The more lateral thin filaments containing actin extend across the I band and partway into the A band (page 281).
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