DOCSLIB.ORG

Puberty in Boys: from Physical Changes to Masturbation

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Puberty in Boys: from Physical Changes to Masturbation PUBERTY IN BOYS: FROM PHYSICAL CHANGES TO MASTURBATION Boys grow and develop (both mentally and physically) at different rates and ages. It is important to know when the “right” time is to begin talking with your son about his development. Ideally, you should begin introducing your son to his body, including his genitals, at an early age. Then, when it is time to talk about the sexual function of his body, it may not be as difficult. Use your judgment in determining when your son is ready for a conversation about puberty and sexuality. For many boys, this may be around age 9 to 11. Keep in mind that it may be earlier or later, depending on your child’s development. Whatever the age, it is important to think about where to begin. Find out what your son knows. Does he already know the body parts? Does he know what it means to have an erection? Use visuals such as drawings and pictures, or use a hand held mirror to help find out if he can name his body parts and genitals and tell you the function of each part. When talking with your son about his body, use the proper or real names of each body part, instead of just saying “down there.” Also teach your son the slang terms for male and female body parts; he is likely to hear them at school or elsewhere. Keep it SIMPLE. For example: “This is your penis: this is where the urine/pee comes out when you use the toilet.” “This is your anus: this is where the stool/poop comes out after your food has been digested.” “This is your penis: this is where semen comes out when you ejaculate.” Be POSITIVE and tell him that his body will grow taller, his testicles and penis will grow bigger, and hair will grow under his arms and in his groin area and that it is NORMAL. Explain that it happens to all boys (including you/his dad) as they grow up. He may not be happy to hear that semen will come out of his penis, but reassure him that it is normal and a sign that he is growing to become a man. Keep it PRIVATE. Talk to him about privacy. Talk to him about appropriate people to discuss his experiences about puberty. There is a curriculum titled Circles, which provides a method for visually delineating relationships. The curriculum uses concentric circles to show levels of relationships, from strangers to those in the inner most circle who are people your son is closest to. Visually show your son who fits into each circle and who he can talk to about puberty and sexuality issues. Teaching Tools A good way to open the conversation is through books and materials that discuss puberty and sexual topics in a frank and straightforward manner. The end of this article offers several suggestions. Consider using picture books or a body puzzle to make a simple game such as “find the body part” to see if your son understands what the body parts are and their functions; give him a healthy reward or praise to show him that he has done well. Read books together about puberty/adolescence, OR if your son doesn’t want to read with you, make them available to him by placing them in places where he plays. Nocturnal Emissions It is important to prepare your son for nocturnal emissions before he is likely to experience one. You might want to say: “As you get older this might happen in your sleep. If it does, your pajamas and sheets will be wet. When this happens, take a shower, put your wet clothes and sheets in the washer, and put clean sheets on your bed. You have not wet the bed. This happens to all boys your age. This is also known as having a ‘wet dream.’” Masturbation Discussing masturbation is an anxiety-provoking moment for any parent. It is important to address the topic with your son in a manner that is consistent with your family’s belief system and to set rules that are both age appropriate and comfortable for you to enforce. This includes acknowledging that it is normal for your son to have sexual urges and interest. Because many children on the autism spectrum tend to self-stimulate in various ways, boundaries must be set around masturbation. You will need to be explicit. Teach rules for appropriate time and place, and tell your son that sometimes masturbation is not an option. Provide your son with scheduled private time where he will be undisturbed. Consider addressing the following with your son: Where can masturbation occur? Instruct your son that masturbation is a private matter. It is not to be done in public or in an area where anyone else might be or might enter. Be explicit with where an appropriate location might be, such as in your son’s room with the door closed. What happens after your son ejaculates? How should he clean up after himself? How do you feel about the use of visual aids that are readily available (for example, everyday catalogs and magazines, not necessarily more graphic ones)? Children are most likely to have a healthy, positive view of sexuality if the parents set guidelines and fully explain sexual changes before they begin to happen, so that parents (or the child’s teachers) are not in a position where they have to confront the child for inappropriate sexual behavior. If problem behavior related to masturbation occurs, interrupt the behavior, but don’t overreact. Remind your child of the rules you have established, and redirect your child to another activity or to a private location, as appropriate. By establishing an open dialogue with your son about sexuality, which includes being safe and socially appropriate, you will help prepare him for adolescence and adulthood and will make him more likely to turn to you for information about sexuality in the future. Related Articles: Puberty in Girls: Discussing Masturbation Puberty in Girls: Physical Changes and Menstruation Sexuality Instruction for Tweens, Teens and Young Adults Teaching Your Child Hygiene and Grooming Skills Adolescence Additional Resources: The Circles Concept Suggested Books: What’s Happening to Me? A Guide to Puberty by Peter Mayle and Arthur Robins; Kensington Publishing Ltd, 1975. This straight- forward book on puberty details changes to the bodies of males and females. The use of cartoons and humor sets a light mood for both the parent and child. What’s Happening to My Body: A Book for Boys by Lynda Madaras, Area Madaras, and Simon Sullivan; Newmarket Press, 2007. This straight-forward book discusses puberty and the male body. A workbook companion piece entitled,My Body, My Self for Boys, can be purchased separately and includes games, checklists, and quizzes to reinforce what boys have learned. Hygeine and Related Behaviors for Children and Adolescents with Autism Spectrum and Related Disorders by Kelly Mahler, MS, OTR/L; Autism Asperger Publishing Company, 2009. Presented in a lesson plan format, the book is designed to help children on the autism spectrum make the connection between hygiene behaviors and how those behaviors are perceived by others. There is a CD with worksheets that can be downloaded and printed for use. Making Sense of Sex: A Forthright Guide to Puberty, Sex and Relationships for People with Asperger’s Syndrome by Sarah Attwood; Jessica Kingsley Publishers Ltd., 2008. This book is ideal for those who need clear, detailed explanations and direct answers to the many questions raised by puberty and sexual maturity. The book describes developments in both the male and female body, and explains how to maintain hygiene and personal care and how to promote general good health. The book examines emotional changes, including moods and sexual feelings, and provides comprehensive information on sex, sexual health, and reproduction as well as the nature of friendship and how it may change over time. Personal Hygiene? What’s that Got to Do with Me? by Pat Crissey; Jessica Kingsley Publishers Ltd., 2005. This book was developed for individuals on the autism spectrum and other learning and developmental disabilities to help them understand how others perceive their appearance and the social implications of neglecting personal hygiene. There are quizzes and hands-on activities to demonstrate why and how to perform various hygiene tasks. Taking Care of Myself, A Hygiene, Puberty, and Personal Curriculum for Young People with Autism by Mary Wrobel; Future Horizons, 2003. Written by a teacher/speech-language pathologist, the book uses simple stories to demonstrate what to say and not to say when talking to your child about hygiene and puberty. The book addresses hygiene, modesty, body growth and development, menstruation, touching, personal safety, and more. The Underground Guide to Teenage Sexuality by Michael J. Basso; Fairview Press, 2003 (2d Ed). Written by a sex educator, this book is for teenagers. It provides accurate and objective information about sexuality to help teens understand their changing bodies and make informed decisions about sexual activity. My First Human Body Book by Patricia J. Wynne and Donald M. Silver; Dover Publications, 2009. This is a coloring book that teaches all parts of the body and body functions. Human Body Puzzle by Melissa & Doug. This is a 100-piece, double-sided, cardboard floor puzzle. One side displays the musculoskeletal system and the other shows the internal organs and the circulatory system. The Center for Autism Research and The Children's Hospital of Philadelphia do not endorse or recommend any specific person or organization or form of treatment .
Load more

Recommended publications
  • Puberty in Girls: Discussing Masturbation
    PUBERTY IN GIRLS: DISCUSSING MASTURBATION Discussing masturbation is an anxiety-provoking moment for any parent. It is important to address the topic with your daughter in a manner that is consistent with your family’s belief system and to set rules that are both age appropriate and comfortable for you to follow through with. This includes acknowledging that it is normal for your daughter to have sexual urges and interest. A good way to open the conversation is through books that discuss puberty and sexual topics in a frank and straightforward manner. Find out what your daughter already knows. Make sure she knows the different parts of her body and their functions. Consider using picture books or a body puzzle to make a simple game such as “find the body part” to see if your daughter understands what the body parts are and their functions; give her a healthy reward or praise to show her that she has done well. Read books together about puberty/adolescence, OR if your daughter doesn’t want to read with you, make them available to her by placing them in places where she plays. When it comes to discussing masturbation, you will need to be explicit. Because many individuals on the autism spectrum tend to self-stimulate in various ways, boundaries must be set around masturbation. Teach rules for appropriate time and place, and tell your daughter that sometimes masturbation is not an option. Provide her with private time where she will be undisturbed. Establish an open dialogue with your daughter about sexuality, which includes being safe and socially appropriate.
    [Show full text]
  • Original Article HISTOLOGICAL CHARACTERISTICS of FOLLICULOGENESIS in MURRAH WATER BUFFALOES DURING the EARLY POSTPUBERTAL PERIOD
    Bulgarian Journal of Veterinary Medicine, 2020, 23, No 1, 8088 ISSN 1311-1477; DOI: 10.15547/bjvm.2156 Original article HISTOLOGICAL CHARACTERISTICS OF FOLLICULOGENESIS IN MURRAH WATER BUFFALOES DURING THE EARLY POSTPUBERTAL PERIOD V. MANOV, V. PLANSKI & G. S. POPOV Faculty of Veterinary Medicine, University of Forestry, Sofia, Bulgaria Summary Manov, V., V. Planski & G. S. Popov, 2020. Histological characteristics of folliculogenesis in Murrah water buffaloes during the early postpubertal period. Bulg. J. Vet. Med., 23, No 1, 8088. A characteristic feature of water buffalo heifers is that they approach breeding maturity later than bovine heifers. From a physiological and endocrinological view, this is related to a later puberty, which affects the overall reproductive performance of water buffalo. The aim of this study was to highlight some morphological characteristics of the water buffalo (Bubalus bubalis) ovaries in the early postpubertal period. The results showed active ovaries of the examined specimens. Some of the follicles had no oocyte, but were with normal structure and physiological activity. Histology is a de- finitive method for examination of ovarian activity in water buffaloes. In some of the ovulating folli- cles the oocyte was absent during early puberty. The presence of corpora lutea confirmed the endo- crine maturity of the hypothalamus-pituitary-gonadal endocrine axis in 11–14 months old heifers despite the absence of oocytes. Key words: corpus luteum, estrus, follicle, ovary, ovulation, postpubertal period, water buffalo heifer INTRODUCTION Water buffalo heifers attain breeding ma- variable and is influenced by a wide vari- turity later than bovine heifers which is ety of factors, including climate, geo- attributed to later onset of puberty, affect- graphic area, breed, season of birth, and ing the overall reproductive performance.
    [Show full text]
  • Puberty—Ready Or Not Expect Some Big Changes
    puberty—ready or not expect some big changes Puberty is the time in your life when your Zits! body starts changing from that of a child to that of an Girls & Boys. adult. At times you may feel like your body is totally Another change that out of control! Your arms, legs, hands, and feet happens during puberty is that your skin gets oilier and you may may grow faster than the rest of your body. You may feel a little start to sweat more. This is because your glands are growing too. clumsier than usual. It’s important to wash every day to keep your skin Compared to your friends you may feel too tall, too short, too clean. Most people use a deodorant or antiperspirant to keep odor fat, or too skinny. You may feel self-conscious about and wetness under control. Don’t be surprised, even if you wash these changes, but many of your friends probably do too. your face every day, that you still get pimples. This is called acne, and it’s normal during this time when your hormone levels are Everyone goes through puberty, but not always at high. Almost all teens get acne at one time or another. the same time or exactly in the same way. In general, here’s Whether your case is mild or severe, there are things you can do what you can expect. to keep it under control. For more information on controlling acne, talk with your pediatrician. When? There’s no “right” time for puberty to begin.
    [Show full text]
  • Knowledge About Human Reproduction and Experience of Puberty 4
    KNOWLEDGE ABOUT HUMAN REPRODUCTION AND EXPERIENCE OF PUBERTY 4 4.1 KNOWLEDGE AND EXPERIENCE OF PUBERTY Knowledge of the physiology of human reproduction and the means to protect oneself against sexual or reproductive problems and diseases should be available to adolescents. Better knowledge of these subjects among young adults will lead to correct attitudes and responsible reproductive health behavior. 4.1.1 Knowledge of Physical Changes In the 2002-2003 Indonesia Young Adult Reproductive Health Survey (IYARHS), respondents were asked several questions to measure their knowledge about human reproduction and the experience of puberty. They were asked to name any physical changes that a boy or a girl goes through during the transition from childhood to adolescence. The responses were spontaneous, without any prompting from the interviewer. The findings are presented in Table 4.1. It is interesting to note that while the respondents may have experienced some of the physical changes listed in the questionnaire, some may not have recognized them as part of the process of growing up into adulthood; others may not report them to the interviewer. Table 4.1 Knowledge of physical changes at puberty Percentage of unmarried women and men age 15-24 who know of specific physical changes in a boy and a girl at puberty, by age, IYARHS 2002-2003 Women Men Indicators of physical changes 15-19 20-24 Total 15-19 20-24 Total In a boy Develop muscles 26.3 27.7 26.8 33.1 30.4 32.0 Change in voice 52.2 65.6 56.7 35.5 44.6 39.2 Growth of facial hair, pubic hair,
    [Show full text]
  • Female Tanner Stages (Sexual Maturity Rating)
    Strength of Recommendations Preventive Care Visits – 6 to 17 years Bold = Good Greig Health Record Update 2016 Italics = Fair Plain Text = consensus or Selected Guidelines and Resources – Page 3 inconclusive evidence The CRAFFT Screening Interview Begin: “I’m going to ask you a few questions that I ask all my patients. Please be honest. I will keep your Screening for Major Depressive Disorder -USPSTF answers confidential.” Age 12 years to 18 years 7 to 11 yrs No Yes Part A During the past 12 months did you: Screen (when systems in place for diagnosis, treatment and Insufficient 1. Drink any alcohol (more than a few sips)? □ □ follow-up) evidence 2. Smoked any marijuana or hashish? □ □ Risk factors- parental depression, co-morbid mental health or chronic medical 3. Used anything else to get high? (“anything else” includes illegal conditions, having experienced a major negative life event drugs, over the counter and prescription drugs and things that you sniff or “huff”) □ □ Tools-Patient Health Questionnaire for Adolescent(PHQ9-A) Tools For clinic use only: Did the patient answer “yes” to any questions in Part A? &Beck Depression Inventory-Primary Care version (BDI-PC) perform less No □ Yes □ well Ask CAR question only, then stop. Ask all 6 CRAFFT questions Treatment-Pharmacotherapy – fluoxetine (a SSRI) is Part B Have you ever ridden in a CAR driven by someone □ □ efficacious but SSRIs have a risk of suicidality – consider only (including yourself) who was ‘‘high’’ or had been using if clinical monitoring is possible. Psychotherapy alone or alcohol or drugs? combined with pharmacotherapy can be efficacious.
    [Show full text]
  • Precocious Puberty Children with Spina BiDa and Hydrocephalus May Start Puberty Earlier Than Their Peers
    SBA National Resource Center: 800-621-3141 Precocious Puberty Children with Spina Bida and hydrocephalus may start puberty earlier than their peers. What is Puberty? If major breast development starts before age 8, it is considered early. (Sometimes girls will have some Puberty refers to normal body changes that lead to breast development, with no other signs of puberty. maturity and the ability to have children. Normal puberty This isolated change may be normal.) begins between ages 8 and 12 in girls and between 9 and 14 in boys. Hormones made in the brain control the timing and sequence of puberty. These hormones What are the stages of normal puberty in boys? stimulate other parts of the body to make sex hormones. The usual sequence in boys is: The sex hormones, especially estrogen in girls and testosterone in boys, cause sexual maturation. • The testicles grow larger. • The penis grows larger. What are the stages of normal puberty in girls? • Pubic hair grows. The physical changes seen in puberty are labeled by “Tanner staging.” Stage 1 is child-like (before puberty) • There is a growth spurt.rt. and stage 5 is full maturity. The usual sequence in girls is: • Other body hair grows.s. • Breasts start to develop. If boys show major developmentelopment • Hips widen and a there is a growth spurt that usually before age 9, it is considereddered lasts about three to four years. early. Early puberty in girls or boys is called • Pubic hair grows (three-to-six months after breasts “Precocious Puberty.” develop). • Other body hair grows.
    [Show full text]
  • Post-Orgasmic Illness Syndrome: a Closer Look
    Indonesian Andrology and Biomedical Journal Vol. 1 No. 2 December 2020 Post-orgasmic Illness Syndrome: A Closer Look William1,2, Cennikon Pakpahan2,3, Raditya Ibrahim2 1 Department of Medical Biology, Faculty of Medicine and Health Sciences, Universitas Katolik Indonesia Atma Jaya, Jakarta, Indonesia 2 Andrology Specialist Program, Department of Medical Biology, Faculty of Medicine, Universitas Airlangga – Dr. Soetomo Hospital, Surabaya, Indonesia 3 Ferina Hospital – Center for Reproductive Medicine, Surabaya, Indonesia Received date: Sep 19, 2020; Revised date: Oct 6, 2020; Accepted date: Oct 7, 2020 ABSTRACT Background: Post-orgasmic illness syndrome (POIS) is a rare condition in which someone experiences flu- like symptoms, such as feverish, myalgia, fatigue, irritabilty and/or allergic manifestation after having an orgasm. POIS can occur either after intercourse or masturbation, starting seconds to hours after having an orgasm, and can be lasted to 2 - 7 days. The prevalence and incidence of POIS itself are not certainly known. Reviews: Waldinger and colleagues were the first to report cases of POIS and later in establishing the diagnosis, they proposed 5 preliminary diagnostic criteria, also known as Waldinger's Preliminary Diagnostic Criteria (WPDC). Symptoms can vary from somatic to psychological complaints. The mechanism underlying this disease are not clear. Immune modulated mechanism is one of the hypothesis that is widely believed to be the cause of this syndrome apart from opioid withdrawal and disordered cytokine or neuroendocrine responses. POIS treatment is also not standardized. Treatments includeintra lymphatic hyposensitization of autologous semen, non-steroid anti-inflamation drugs (NSAIDs), steroids such as Prednisone, antihistamines, benzodiazepines, hormones (hCG and Testosterone), alpha-blockers, and other adjuvant medications.
    [Show full text]
  • Trends and Patterns in Menarche in the United States: 1995 Through 2013–2017 by Gladys M
    National Health Statistics Reports Number 146 September 10, 2020 Trends and Patterns in Menarche in the United States: 1995 through 2013–2017 By Gladys M. Martinez, Ph.D. Abstract older, have older friends, and be more likely to engage in negative behaviors Objective—This report presents national estimates of age at first menstrual period such as missing school, smoking, and for women aged 15–44 in the United States in 2013–2017 based on data from the drinking (8–11). The younger the age at National Survey of Family Growth (NSFG). Estimates for 2013–2017 are compared first menstrual period and first sexual with those from previous NSFG survey periods (1995, 2002, and 2006–2010). intercourse, the longer the interval Methods—Data for all survey periods analyzed are based on in-person interviews young women will potentially spend at with nationally representative samples of women in the household population aged risk of pregnancy. Differences in age at 15–44 in the United States. For the 2013–2017 survey period, interviews were menarche across population subgroups conducted with 10,590 female respondents aged 15–44. In 2015–2017, the age range may help explain differences in timing of the NSFG included women aged 15–49, but only those aged 15–44 were included of first sexual intercourse and timing of in this analysis. The response rate for the 2013–2017 NSFG was 67.4% for women. first births. The relationship between age Measures of menarche in this report include average age at first menstrual period, at menarche and the timing of first sexual probability of first menstrual period at each age, and the relationship between age at intercourse in the United States has menarche and age at first sexual intercourse.
    [Show full text]
  • Review Article Physiologic Course of Female Reproductive Function: a Molecular Look Into the Prologue of Life
    Hindawi Publishing Corporation Journal of Pregnancy Volume 2015, Article ID 715735, 21 pages http://dx.doi.org/10.1155/2015/715735 Review Article Physiologic Course of Female Reproductive Function: A Molecular Look into the Prologue of Life Joselyn Rojas, Mervin Chávez-Castillo, Luis Carlos Olivar, María Calvo, José Mejías, Milagros Rojas, Jessenia Morillo, and Valmore Bermúdez Endocrine-Metabolic Research Center, “Dr. Felix´ Gomez”,´ Faculty of Medicine, University of Zulia, Maracaibo 4004, Zulia, Venezuela Correspondence should be addressed to Joselyn Rojas; [email protected] Received 6 September 2015; Accepted 29 October 2015 Academic Editor: Sam Mesiano Copyright © 2015 Joselyn Rojas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The genetic, endocrine, and metabolic mechanisms underlying female reproduction are numerous and sophisticated, displaying complex functional evolution throughout a woman’s lifetime. This vital course may be systematized in three subsequent stages: prenatal development of ovaries and germ cells up until in utero arrest of follicular growth and the ensuing interim suspension of gonadal function; onset of reproductive maturity through puberty, with reinitiation of both gonadal and adrenal activity; and adult functionality of the ovarian cycle which permits ovulation, a key event in female fertility, and dictates concurrent modifications in the endometrium and other ovarian hormone-sensitive tissues. Indeed, the ultimate goal of this physiologic progression is to achieve ovulation and offer an adequate environment for the installation of gestation, the consummation of female fertility. Strict regulation of these processes is important, as disruptions at any point in this evolution may equate a myriad of endocrine- metabolic disturbances for women and adverse consequences on offspring both during pregnancy and postpartum.
    [Show full text]
  • Puberty for Boys Page 1 of 3
    Puberty for Boys Page 1 of 3 Puberty for Boys Puberty is the time when a boy’s body grows into a man's body. How does puberty start? Puberty starts with a change in your hormones. Hormones start working on the testicles, causing them to make testosterone. Testosterone is the main hormone that starts the changes that happen when boys go through puberty. When does puberty start? The average age when boys start puberty is around age 11. However, it can start anywhere between age 9 and 14 years. The physical changes usually take place over 3 to 4 years. How do I know when puberty has started? The first thing you may notice is pubic hair. Soon after pubic hair starts growing in the area around your penis, the penis will start to get bigger. It will get longer and then thicker. Your testicles will also get bigger. The testicles make sperm as well as testosterone. (Sperm can fertilize a woman’s egg and make a baby.) The testicles are in the scrotum, which is the sac of loose skin below the penis. As you mature, the scrotum will hang lower and get looser. What happens to the rest of the body? Testosterone works on many parts of the body. In addition to pubic hair, you will start to have hair under your arms and more body odor. This is a good time to start using deodorant. Your voice will change. This takes awhile. Before your voice gets deeper, it may go through a squeaky period. You may get embarrassed by it, but it usually doesn't last more than 6 months.
    [Show full text]
  • The Milk Supply Equation
    The Making of a Milk Factory Objectives . List the major factors necessary for good milk production . Describe the role of the placenta in mammary gland development during pregnancy. Explain two ways that environmental The Making of a Milk Factory contaminants may interfere with reproductive hormones © 2019 Lisa Marasco MA, IBCLC, FILCA Hormones and Receptors The Milk Supply Equation SUFFICIENT GLANDULAR TISSUE + INTACT NERVE PATHWAYS & DUCTS + ADEQUATE HORMONES & RECEPTORS + ADEQUATE LACTATION-CRITICAL NUTRIENTS + ADEQUATE & EFFECTIVE MILK REMOVAL (Good management, effective baby) = GOOD MILK SUPPLY Directors of the process Important players by stage Hormones important to milk production Puberty Pregnancy Lactation Insulin Estrogen Estrogen Cortisol Lactogenic Progesterone Progesterone Complex HPL Prolactin Chorionic Gonadotropin Maintains metabolism; Growth Hormone Growth Hormone Thyroxine - Supports & directs IGF-1 IGF-1 PTPRF pituitary Prolactin Prolactin Insulin Insulin Regulate mammary blood Cortisol Cortisol PTHrP - flow; calcium transport and Thyroxine Thyroxine homeostasis PTHrP PTHrP Oxytocin Oxytocin - milk delivery With permission: Andaluz Waterbirth Center © Lisa Marasco 2019 1 The Making of a Milk Factory Hormone receptors 101 Hormone Receptors 201 Hormones- travel thru blood or synthesized locally Dynamic: Expressed by genes ER α, β Expressed PR α, β R Up & down regulation where and PRLR L, S Can be resistant as needed OTR H Can be hypersensitive Can be influenced positively or negatively by other hormones Receptors: Integral to hormone function, located on “target tissues,” on or in cells Can be influenced by environment The Big Construction Picture PR-A Phase I ER PR-B ERα Series of stages of organo-genesis lasting until ERβ PRLrL adulthood that are irreversible (fetal through puberty) PR-B Phase II Series of changes involving growth and secretory differentiation of the lobulo-alveolar system that are reversible Estrogen Prolactin Progesterone (Preg, lactation, involution) Horseman, N.
    [Show full text]
  • The Tanner Stages
    Vermont Department of Health Health Screening Recommendations for Children & Adolescents The Tanner Stages Because the onset and progression of puberty are so variable, Tanner has proposed a scale, now uniformly accepted, to describe the onset and progression of pubertal changes (Fig. 9- I Preadolescent 24). Boys and girls are rated on a 5 point scale. Boys are rated for genital development and no sexual hair pubic hair growth, and girls are rated for breast development and pubic hair growth. Pubic hair growth in females is staged as follows (Fig 9-24, B): II Sparse, pigmented, long, straight, • Stage I (Preadolescent) - Vellos hair develops over the pubes in a manner not greater than that over mainly along labia the anterior wall. There is no sexual hair. and at base of penis • Stage II - Sparse, long, pigmented, downy hair, which is straight or only slightly curled, appears. These hairs are seen mainly along the labia. This stage is difficult to quantitate on black and white photographs, particularly when pictures are of fair-haired subjects. III • Stage III - Considerably darker, coarser, and curlier sexual hair appears. The hair has now spread Darker, coarser, curlier sparsely over the junction of the pubes. • Stage IV - The hair distribution is adult in type but decreased in total quantity. There is no spread to the medial surface of the thighs. • Stage V - Hair is adult in quantity and type and appears to have an inverse triangle of the classically IV Adult, but feminine type. There is spread to the medial surface of the thighs but not above the base of the decreased inverse triangle.
    [Show full text]