Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 13 - Assess - Page 281: 4



Work Step by Step

Option a. is incorrect. The sarcoplasm is the cytoplasm of a muscle fiber.. Option b. is incorrect. The sarcoplasmic reticulum is the smooth endoplasmic reticulum of a muscle fiber. It stores calcium ions. Option d. is incorrect. The sarcomere is a vertical division of the myofibril. Option c. is correct. The plasma membrane of a muscle fiber is called the sarcolemma.
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