First, _1.____________ are produced in two almond-shaped organs known as _2.____________. During the process of _3.____________, a mature egg ( _4.____________ ) is released and enters one of two _5.____________ . For a few days the egg cell travels towards the pear-shaped _6.____________ . The lining of this organ thickens in preparation for a fertilized egg. If the egg is not fertilized by the male_7.____________, it will leave the body together with the lining of the uterus and the amount of blood. This is called _8.____________. The lower portion of the uterus is called the _9.____________ and it is a common site of cancer in women. The female organ of intercourse is the _10.____________ A circular fold of skin is usually present at the entrance to this organ is called the _11.____________. Outside of this organ are folds skin covered with pubic hair known as _12.____________. Between these skin folds is a small, round and sensitive area of skin called _13.____________. The development of the reproductive system is triggered by the hormones _14.____________ and _15.____________, which caused many physical changes in a girl. This period of change is called puberty stage.
