Lecture
This lecture covers the process of human embryology from fertilization to blastocyst formation, detailing the fusion of sperm and oocyte, embryonic growth, and the formation of blastocysts. It explains the controversies between epigenesis and preformation theories, the development of the embryo, and implantation in the uterus. The instructor discusses the structure of the placenta, the role of decidual cells, and the phenomenon of ectopic pregnancies. The lecture emphasizes the importance of understanding human embryology for careers in biology, medicine, and health sciences, shedding light on prenatal origins and congenital malformations.