Chapter 19.1, Problem 1.11SR

Summary Introduction

To match: The given each lettered term with the most closely related description.

Introduction: Cleavage results in the production of pre-embryo cells called blastomeres. After three days, the pre-embryo forms a solid ball of cells called the morula, which reaches the uterus on the fourth day. In the next 2 days, the morula forms a hollow ball of cells called the blastocyst that encloses a cavity at the center.