Answer
(b) thin
Work Step by Step
The Z disc, a coin-shaped sheet composed largely of the protein alpha-actinin, anchors the thin filaments (page 281).
Human Anatomy & Physiology (9th Edition)
by Marieb, Elaine N.; Hoehn, Katja N.
Published by
Pearson
ISBN 10:
0321743261
ISBN 13:
978-0-32174-326-8
Chapter 9 - Muscles and Muscle Tissue - Review Questions - Page 317: 3(3)
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