cell multiplication!
fertilization
Fertilization Begins. Sperm reaches the egg.
The embryo attaches to the mother
Fertilization is the union of of human egg and sperm cells. It is uncertain exactly what people may mean by conception. Conception may mean the same as fertilization or it may mean point where the connection is made to the walls of the womb by the zygote. The word does not have a hard definition as it is a debate point between the Pro-Life and Pro-Choice factions about exactly when life begins.
fertility begins to decline after age 35. by age 45, periods can become irregular and fertility has declined even further.
Fertilization takes place, Zygote divides, Implantation occurs, Gastrulation begins, and Heart forms.
Fertilization begins when a sperm and egg meet and start multiplying.
adulthood
fertilization begins in the Falopian tube.
fertilization
it begins 36 hours after fertilization
The thoracic and sacral curvatures are obvious at birth. The cervical curvature develops when a baby begins to hold its head up independently, and the lumbar curvature develops when the baby learns to walk.
Cervical curvature
Fertilization Begins. Sperm reaches the egg.
fertilization zygote divides gastrulation placenta forms
The chronological stages in the human fertilization process begins when an egg is released from the ovary. It becomes fertilized by sperm and then implants in the uterus.
The very first is sperm (fertilization)... The second first, is cell division, The third first, is the tail of the sperm begans to form the Septums of the heart and when the heart is completed and begins to beat, the first is a living organism.