Once the union of the egg and sperm has occurred, i.e. fertilization, the zygote formed moves through the fallopian tube and divides until it reaches the uterus.
At this point, the embryo is already 5 days old, known as a blastocyst, and implants in the endometrium.
Read the full article on: What Are the Steps of Fertilization in Humans? ( 84).
By Laura de la Fuente Bitane M.D. (gynecologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Romina Packan (invitra staff).
Last Update: 04/10/2024
