Principles of Anatomy and Physiology
Principles of Anatomy and Physiology
15th Edition
ISBN: 9781119329398
Author: Gerard J Tortora, Bryan Derrickson
Publisher: John Wiley & Sons Inc
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Chapter 21, Problem 39CP
Summary Introduction

To review:

The sites of production of blood cells outside and inside the embryo.

Introduction:

Blood is a fluid connective tissue that circulates in the blood vessels of organisms. In placental mammals, an embryo is an unborn offspring that is in the process of development. After the eighth week of fertilization, the embryo is termed as a fetus.

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