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Development Weeks 1-8/Las Primeras Ocho Semanas de Desarrollo

Development Weeks 1-8/Las Primeras Ocho Semanas de Desarrollo


This lesson will identify the stages of development of an embryo during the first 8 weeks of pregnancy.

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En esta lección vamos a hablar de como un embrión se desarrolla en las primeras ocho semanas de embarazo.

Terms to Know
Embryonic Disk

Part of the inner cell mass of the blastocyst, the embryonic disk is the cellular framework that begins embryonic development; the nervous system develops from ectoderm of this.


The developing baby after the first 8 weeks of development up to birth.


Also called spontaneous abortion, a miscarriage is when the embryo is expelled from the uterus.

Neural Tube

A tube formed from the ectoderm of the blastocyst that serves as the framework for the development of the central nervous system (brain and spinal cord).

Sex Chromosomes

The X & Y chromosomes that when paired determine the gender of the child and carry other genetic traits as well; XX = female while XY = male.