By Alvin F. Goldfarb (auth.), Alfred M. Bongiovanni M.D. (eds.)

ISBN-10: 1461583241

ISBN-13: 9781461583240

ISBN-10: 1461583268

ISBN-13: 9781461583264

ABOUT the subject material formative years is a time of vital switch. The adolescent period spans the period among formative years and maturity. it's a time of actual, social, or even emotional upheaval. in this particularly short time period not just does actual development speed up yet, of extra value within the biology of any species, the person attains reproductive adulthood. inside of this timeframe, the individual acquires the skill to procreate and perpetuate our species. From a reproductive viewpoint, all through adeolescence the person is being ready for might be what could be thought of crucial functionality an organism has in the course of his/her short sojourn on the earth, specifically to endow successor(s) with a minute quan­ tity of DNA to permit continuation of its kind of lifestyles. The interlude be­ tween formative years and maturity isn't consistently socially or emotionally sim­ ple. The anatomic and physiologic alterations that come to go in the course of early life will not be inevitably paralleled by way of a means to imagine the societal tasks linked to reproductive adulthood. even if the physiologic adjustments generally continue in a predetermined model, edition to a altering function is a much more making an attempt procedure. conversant in residing in a kid's global, the topic of adolescent switch calls for massive time and knowing to facilitate exis­ tence within the grownup international. The early levels of sexual knowledge, for ex­ considerable, are commonly tremendous complicated and, as evidenced through the in­ ordinately excessive frequency of stripling being pregnant and sexually transmitted ailments, should be terribly dangerous.

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Because of the common embryologic origins of the urinary and mullerian systems, there is a high incidence of urologic anomalies in patients with mullerian agenesis. 28 An intravenous pyelogram must, therefore, be an integral part of the evaluation of these patients. Spinal anomalies have also been described in these patients. 29 The karyotype of these patients is always 46XX. Patients with mullerian agenesis must be distinguished from those with testicular feminization, who also present with a blindending vaginal pouch and absent uterus.

The normal values according to age and stage of development of the adrenal secretions are tabulated in Chapter 10. 5. 1. CNS The hypothalamus, pituitary, and ovaries have a unique interdependent relationship. of these structures is the first to attain maturity. Recent studies, however, point to the CNS as the limiting element in determining the onset of puberty. Puberty in the female may be defined as that stage in development at which the ovaries secrete sex hormones, primarily estradiol, in quantities sufficient to stimulate growth of genital structures and produce secondary sexual characteristics.

J Clin Endocrinol Metab 40:458-461, 1975 41. Shellabarger CJ: Observations of the pineal in the white leghorn capon and cockrel. Poultry Sci 32:189, 1967 42. Wurtman RJ, Axelrod J, Chu EW: Melatonin, a pineal substance: Effect on the rat ovary. Science 141:277-278, 1963 43. Zacharias L, Wurtman RJ: Blindness: Its relation to age of menarche. Science 144: 11541155, 1964 PUBERTAL DEVELOPMENT 44. Lee Pa, Midgley AR, Jr, Jaffe RB: Regulation of human gonadotropins. VI. Serum follicle stimulating and luteinizing hormone determinations in children.

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Adolescent Gynecology: A Guide for Clinicians by Alvin F. Goldfarb (auth.), Alfred M. Bongiovanni M.D. (eds.)

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