Embryology of the head and neck

Peter J. Taub, John M. Mesa

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Following fertilization, the fusion of two haploid germ cells, a diploid zygote with 46 chromosomes is produced. Mitotic division produces two daughter cells, each half the size of the original cell but containing the full complement of genetic information. Subsequent divisions produce a solid mass of cells by the fourth day ("morula"). As fluid accumulates within the morula, one group of cells accumulates on one side ("embryoblast") while the remaining group of cells surrounds the periphery ("trophoblast"). This new cystic structure is named a "blastocyst" (see Fig. 1.1). The outer trophoblast layer, from "tropho-" meaning nutrition, will become the placenta following implantation in the uterus by day 6. The inner embryoblast layer will become the embryo.

Original languageEnglish
Title of host publicationFerraro's Fundamentals of Maxillofacial Surgery
PublisherSpringer New York
Number of pages12
ISBN (Electronic)9781461483410
ISBN (Print)9781461483403
StatePublished - 1 Jan 2015


Dive into the research topics of 'Embryology of the head and neck'. Together they form a unique fingerprint.

Cite this