Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 32, Skeletal, Muscular, and Integumentary Systems - Standardized Test Prep - Page 945: 2



Work Step by Step

Option B is incorrect. The heart contains cardiac muscle. Option C is incorrect. Neuromuscular junctions are where motor neurons and skeletal muscles meet. Option D is incorrect. Joints are where two bones meet. Option A is correct. The walls of blood vessels are lined with smooth muscle, which contract or relax to constrict or dilate the blood vessels.
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