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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Distinguish between the roles of the trophoblast and inner cell mass of the blastocyst in mammalian development.

Summary Introduction

To review:

Distinguish between the roles of the trophoblast and inner cell mass of the blastocyst in mammalian development.

Introduction:

The human embryonic development includes the formation of morula that differentiates into the blastocyst. After implantation of the blastocyst into the endometrium of the uterus, the inner cell mass gives rise to epiblast and hypoblast.

Explanation

Differences between the roles of the trophoblast and inner cell mass of the blastocyst in mammalian development are shown in the table.

Trophoblast Blastocyst
It forms the outermost layer of cells in the mammalian blastula. It forms the innermost layer and is an embryonic pole of the blastula.
It secretes protease, which digests pathway between endometrial cells during implantation...

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