BRS Embryology, Fifth Edition is a succinct outline-format review for USMLE and course exams, with review questions at the end of each chapter and a comprehensive USMLE-style examination at the end of the book. The text outlines the important facts and concepts tested on the USMLE, within the context of human embryologic development. The book also includes radiographs, sonograms, computed tomography scans, and photographs of various congenital malformations. This edition has been updated and includes new, additional USMLE-style questions. Clinical images have been placed closer to the relevant text.

Table of Contents
1. Prefertilization Events
I. Sexual Reproduction
II. Chromosomes
III. Meiosis
IV. Oogenesis: Female Gametogenesis
V. Spermatogenesis: Male Gametogenesis
VI. Clinical Considerations
Study Questions
Answers and Explanations

2. Week 1 of Human Development (Days 1