Principles of Anatomy and Physiology 14e with Atlas of the Skeleton Set (14th Edition)

Published by Wiley
ISBN 10: 1-11877-456-6
ISBN 13: 978-1-11877-456-4

Chapter 22 - The Lymphatic System and Immunity - Figure 22.8 - Page 810: 1

Answer

Lymphatic tissue begins development in the fetus as early as the fifth week of gestation

Work Step by Step

Lymphatic vessels are mesodermal in embryonic origin. They develop from lymph sacs which derive from developing veins.
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