INTEGRATED PRINCIPLES OF ZOOLOGY
INTEGRATED PRINCIPLES OF ZOOLOGY
18th Edition
ISBN: 9781260411133
Author: HICKMAN
Publisher: MCG
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Chapter 29, Problem 14RQ
Summary Introduction

To explain: The way by which an electron micrograph shows that during constriction, the actin and myosin filaments persist constant length while the distance between the Z lines shortens.

Introduction: Muscle constricts in response to the stimulation of a nerve. The striated muscle shows periodic bands, plainly visible under a light microscope. Each striated muscle cell is tube-shaped and multinucleated. It is made up of myofibrils and sarcolemma. Myofibrils are made up of actin and myosin.

Summary Introduction

To explain: The role regulatory proteins troponin and tropomyosin.

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