Anatomy Which of the following are components of the definitive chorion? A Extraembryonic somatic mesoderm and epiblast B Extraembryonic somatic mesoderm and cytotrophoblast C Extraembryonic somatic mesoderm and syncytiotrophoblast D Extraembryonic somatic mesoderm, cytotrophoblast, and syncytiotrophoblast 💡 Explanation Which of the following are components of the definitive chorion? ✓ Correct Answer: D. Extraembryonic somatic mesoderm, cytotrophoblast, and syncytiotrophoblast