Chapter 27, Problem 6CYR

Summary Introduction

To review:

The blank spaces in the statement, “The blastocyst has two distinct cell populations: large, flat cells called the _______; and a cluster of round cells called the ______”.

Introduction:

In the fourth day of reproductive development, a glycogen-rich secretion passes through the endometrial glands inside the lumen of the uterus known as uterine milk. This substance provides nourishment to the conceptus. The conceptus which is now called as blastocyst comes out from the zonal pellucid and the blastomeres surround an internal fluid-filled cavity.