human fertilisation and embryology

Human fertilization occurs when a sperm cell from a man merges with an egg cell from a woman, typically during intercourse in the fallopian tube. The sperm penetrates the egg, resulting in a fertilized egg or zygote. This zygote begins to divide and grow as it travels toward the uterus, where it implants into the uterine lining. Embryology is the study of early development from fertilization through the formation of an embryo, focusing on how cells divide, specialize, and organize into tissues and organs, leading to the development of a new human.