Slideshows Images Quizzes

Copyright © 2018 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. See additional information.

Definition of Yolk sac

Yolk sac: A membrane outside the human embryo that is connected by a tube (the yolk stalk) though the umbilical opening to the embryo's midgut. The yolk sac serves as an early site for the formation of blood and in time, is incorporated into the primitive gut of the embryo

QUESTION

The first sign of pregnancy is most often: See Answer
Reviewed on 12/31/2018
CONTINUE SCROLLING FOR RELATED SLIDESHOW

Health Solutions From Our Sponsors