Chapter 21.5, Problem 18BYGO

Summary Introduction

To analyze:

From where angioblasts develop and what they develop into.

Introduction:

The development of blood vessels, both in the embryo and later in life, is called angiogenesis. The first trace of embryonic angiogenesis appears at 13 to 15 days of gestation. At this time, the embryo is a three-layered disc attached to the uterus and associated with three membranes, the chorion, amnion, and yolk sac.