Biology
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yet is controls different physiological process. Over secretion and in deficiency of these hormones create disturbance in different function. So it creates different irregularities within the body. Reproductive hormones secreted from endocrine glands within the body are described below. (1) Pituitary gland (2) Thyroid gland (3) Adrenal gland (4) Testis (5) Ovary (6) Placenta. Growth stimulating hormone and producing hormone are produced by the pituitary gland. These hormones regulate growth of reproductive glands a secretion and control the functions, controls mammary gland and milk secretion. Besides, these hormones regulate the contraction of uterus. Thyroid glands secretes thyroxine hormone. It regulates metabolic function ensures physical and mental development, sexual characters. Hormone secreted from the adrenal gland regulates development of reproductive organs, exposition sexual characters. Testeron hormone secreted from testis and androgen helps to produce sperms and sexual secondary characters, such as: deepening of voice and growth of beard. Ovary secretes estrogen, progesterone, relaxin hormones. These hormones cause the development sexual characters, menstruation, enlargement of the well of uterus for implantation of the embryo and placenta. Besides, this it has a particular role in the formation of ovum. (singular of ova). Gonadotropic and progesterone of placenta stimulates ductless glands of ovary and helps in enlargement of mammary glands. When the baby takes birth their reproductive system remains tender or immature. Along with physical growth, reproductive system also grows and develop with the increasing of age. Hormones play a significant role in this process. Children pass over their childhood, adolescence and attain to youth. The transitional period adolescence indolence and the youth is named as puberty. At that time physical, mental and secondary sexual characters develops. Both inner and outer changes occur, such as: growth of extra hair on the face, deepening of the voice, widening of shoulder etc are the external changes. During puberty the changes within the girls are noticed, these are – shyness, hesitation, softness in skin, loveliness in appearance etc. In this stage of puberty usually starts monthly discharge of blood or menses from the uterus at regular intervals. This is menstrual cycle or menstruation. After 1-2 years of puberty girls gain the ability of reproduction. Then they begin to produce ovum from the maternal female reproductive cell (mother stem cell) with in the ovary. It continues up to 40-50 years. Menopause is the time of cessation of the menstrual cycle it normally occurs in woman aged between 40-50 years. Here it is mentioned that menstrual cycle remains temporarily stopped during pregnancy. After 6 weeks of child birth it starts again. Marriage is a social, spiritual and a family ties. By readjustment as a couple begin their life together. They become intimate to each other unhesitantly. A relation of love, affection and attachment develops between them. There should be a specific time limit to get marry. Before 20 years a female should not marry. As a result early marriage