Labelled diagram of Female Reproductive System of Human
Female germ cells or eggs are produced in the ovary. They are also responsible for the production of certain hormones. The organs of the female reproductive system are the ovaries or fallopian tubes, ovaries, uterus, uterus and vagina. This fusion or fertilization of the germ cells gives us the zygote which is capable of growing into a new plant. Pollen must be transferred from the stamen to the stigma. When the transfer of pollen grains takes place within a single plant, it is called self pollination. And it the pollen grains are transferred from one flower to another, it is called cross pollination. Sperm enter the vagina during sexual intercourse. They travel upwards and reach the oviduct where they encounter the egg. The fertilized egg divides to form a ball of cells or embryo. Embryos are implanted in the lining of the uterus where they continue to grow and develop organs to become a foetus. We have seen that mother’s body is designed for the development of the child. So the uterus prepares itself every month to receive and nurture the growing embryo. The lining thickens and supplies a large amount of blood to nourish the growing foetus. The foetus receives nourishment from the mother’s blood with the help of a special tissue called the placenta. It is a disc that is embedded in the wall of the uterus. It has villi on the side of the fetal tissue. On the maternal side there is a blood space, which surrounds the villi. This provides a large surface area for glucose and oxygen to pass from the mother to the foetus. The developing foetus will also produce waste products that can be removed by transfer to the mother’s blood through the placenta. It takes about nine months for the child to develop inside the mother’s body. A child is born as a result of rhythmic contractions of the uterine muscles.
Discussion in video with function below –