High-Yield™ Embryology, Fourth Edition provides a concise, focused review of the most important embryology information needed for the USMLE Step 1. Chapters cover prefertilization events and the embryonic period, embryologic development of each organ system, chromosomal abnormalities, inherited diseases, teratology and more. To prepare students for the clinical vignettes on the USMLE, the book includes numerous clinical cases with words and phrases that patients use.This edition also features new placement of clinical images within the chapter for clearer understanding.

Preface

1. Prefertilization Events

• I. Gametes (Oocytes and Spermatozoa)
• II. Meiosis
• III. Female Gametogenesis (Oogenesis)
• IV. Hormonal Control of the Female Reproductive Cycle
• V. Male Gametogenesis (Spermatogenesis)
• VI. Clinical Considerations

2. Week 1 (Days 1-7)

• I. Overview
• II. Fertilization
• III. Cleavage
• IV. Blastocyst Formation
• V. Implantation
• VI. Clinical Considerations

3. Week 2 (Days 8-14)

• I. Embryoblast
• II. Trophoblast
• III. Extraembryonic Mesoderm
• IV. Clinical Considerations

4. Embryonic Period (Weeks 3-8)

• I. Introduction
• II. Gastrulation
• III. Clinical Considerations

5. Placenta, Amniotic Fluid, and Umbilical Cord

• I. Placenta
• II. The Placenta as an Endocrine Organ
• III. The Placental Membrane
• IV. Amniotic Fluid
• V. Umbilical Cord
• VI. Vasculogenesis
• VII. Hematopoiesis
• VIII. Fetal Circulation

6. Cardiovascular System

• I. Formation of Heart Tube
• II. Primitive Heart Tube Dilatations
• III. The Aorticopulmonary (AP) Septum
• IV. The Atrial Septum
• V. The Atrioventricular (AV) Septum
• VI. The Interventricular (IV) Septum
• VII. Development of the Arterial System
• VIII. Development of the Venous System

7. Digestive System

• I. Primitive Gut Tube
• II. Foregut Derivatives
• III. Midgut Derivatives
• V. The Anal Canal
• VI. Mesenteries

8. Urinary System

• I. Overview
• II. The Pronephros
• III. The Mesonephros
• IV. The Metanephros
• V. Development of the Metanephros
• VI. Relative Ascent of the Kidneys
• VII Blood Supply of the Kidneys
• VIII. Development of the Urinary Bladder
• IX. Clinical Considerations

9. Female Reproductive System

• I. The Indifferent Embryo
• II. Development of the Gonads
• III. Development of Genital Ducts
• IV. Development of the Primordia of External Genitalia
• V. Clinical Considerations

10. Male Reproductive System

• I. The Indifferent Embryo
• II. Development of the Gonads
• III. Development of the Genital Ducts
• IV. Development of the Primordia of External Genitalia
• V. Clinical Considerations
• VI. Summary Table of Female and Male Reproductive Systems Development

11. Respiratory System

• I. Upper Respiratory System
• II. Lower Respiratory System
• III. Development of the Trachea
• IV. Development of the Bronchi
• V. Development of the Lungs

12. Head and Neck

• I. Pharyngeal Apparatus
• II. Development of the Thyroid Gland
• III. Development of the Tongue
• IV. Development of the Face
• V. Development of the Palate
• VI. Clinical Considerations

13. Nervous System

• I. Development of the Neural Tube
• II. Neural Crest Cells
• III. Vesicle Development of the Neural Tube
• IV. Development of the Spinal Cord
• V. Development of the Hypophysis (Pituitary Gland)
• VI. Congenital Malformations of the Central Nervous System

14. Ear

• I. Overview
• II. The Internal Ear
• III. The Membranous and Bony Labyrinths
• IV. The Middle Ear
• V. The External Ear
• VI. Congenital Malformations of the Ear

15. Eye

• I. Development of the Optic Vesicle
• II. Development of Other Eye Structures

Abbreviated Table of Contents