The impact of hormones on adolescent girls

into into adolescence girls, why in a few years, will become Tingtingyuli lovely? This is the hormone secreted by the body's role.Hormone, also known as hormones, it is the body's glands secrete a chemical directly into the blood, affecting the body's metabolism, so that tissue, organ growth and development, make their changes in physiological functions.There are many types of human hormones, human growth and development during puberty, and to promote changes in hormone physiology, there are four:

(1) growth hormone:

Secreted by the pituitary gland it is.The location of the pituitary gland below the brain, the brain by the end of a short handle attached to and hanging with his next, and therefore called the pituitary gland.Adult pituitary gland, such as pea, weighs about 0.6 grams.Glands may be small, but the effect has been enormous, it is now known nine hormone secretion.Direct effect of growth hormone cells in the body, can enhance metabolism, accelerate the synthesis and accumulation of useful material, help to increase cell volume and weight, and promote the growth of the body, in particular, can promote bone growth.If growth hormone deficiency in childhood, it will growth retardation, short body; the contrary, if excessive growth hormone secretion, excessive growth of body parts, body is too high.These are caused by abnormal secretion of growth hormone pathological phenomenon.

(2) thyroid hormone:

It secreted by the thyroid.Location of the thyroid gland in the human body Adam's apple on both sides, like a big butterfly Side close to the trachea.Thyroid weighs about 20-40 grams, very soft, general intangible.Students find the body of thyroid hormone, development and maturation of an important hormone, pituitary growth hormone secretion with thyroid hormone also play a role.Inadequate secretion of thyroid hormone during childhood, will dwarf the human body, the brain development disorder, mental retardation, the occurrence of disease stay.Girls grow up neck, and some were in short supply because of thyroid hormone.

(3) adrenal hormones:

's.Adrenal top position in the kidney, triangular in shape, about 10-15 grams of weight.Produce a variety of adrenal hormones, and pubertal development are closely related mineralocorticoid, glucocorticoid, androgen and adrenal pernicious influence.Which adrenal androgen, can help speed the growth of the human body, so that muscular fat accumulation under the skin on the body hair grow and have a certain sound changes in the role of this hormone has a boys and girls, but girls More importantly, because this is the girl the main source of androgen in vivo.

(4) sex hormones:

Girl sex hormone secreted by the ovaries, for the emergence and maintenance of female secondary sex characteristics have an important role.There are two female sex hormones: estrogen and progesterone.Estrogen and progesterone can induce changes in the uterus of the students, there menstruation, but also to promote the fallopian tubes, vagina, vulva development and maturation.These hormones have an important role in human puberty, they are not human in their own ways, but a strict control system, which is the hypothalamus - pituitary gonadal system.In addition to closely related pituitary growth hormone secretion and growth, there are other endocrine glands to promote secretion of hormones promoting hormones such as thyroid stimulating hormone, gonadotropin and so on.Thyroid stimulating hormone, can promote the secretion of thyroid growth and thyroid hormones, thyroid hormones play a role through; gonadotropin ovarian development can promote women, the ovaries produce estrogen and progesterone, estrogen and progesterone through play.The role of the pituitary gland is great, but it is working under the command of the hypothalamus.In the human brain, the activities have a higher visceral nerve center - the hypothalamus (also known as the hypothalamus).The release of the hypothalamus to secrete various hormones, such as growth hormone releasing hormone, thyroid stimulating hormone releasing hormone, gonadotropin-releasing hormone.The release of hormones then act on the pituitary gland, causing the pituitary secretion of various related hormones, such as growth hormone, thyroid stimulating hormone, gonadotropin, etc., these hormones and then for the corresponding endocrine glands (such as the thyroid, gonads, etc.) the secretion of hormones.

Girls in puberty and the emergence of rapid growth and development of secondary sexual characteristics, it is because the secretion of these hormones keep more active organ, secreting hormones more reason.