What is fertilisation?
Fertilisation is the process of the male and female gametes to form a zygote. In our case (humans) the male gamete has to fertilize the female gamete.
Where does it take place?
It takes place in the female reproductive system, more specifically in the Falopian Tubes.
Implantation and Pregnancy:
What is implantation?
Implantation is the adherence of a fertilized egg to a surface in the reproductive tract, most of the times in the uterus.
What is the placenta?
The placenta is «temporary organ» which permits the mother give nutrients and oxygen to the fetus. Also, it alows the fetus to release carbon dioxide which willl be expulsed by the mother.
How long does gestation take place in humans?
Gestation lasts 40 weeks, after these the embryo is called fetus so, gestation is over.