reaching age of adolescence.pptx
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This document discusses adolescence and the changes that occur during puberty due to hormones. It notes that puberty involves an increase in height and changes in body shape, voice, sweat and oil glands, and sex organs. It describes the secondary sexual characteristics that develop in boys like facial hair growth and in girls like breast development and armpit/pubic hair growth. The document also provides characteristics of hormones, stating they are chemical messengers secreted by glands in small quantities that act on specific target sites.
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This document provides an overview of puberty for girls. It explains that puberty is when the body changes from child to young adult, triggered by increased hormones like estrogen, progesterone, and testosterone. Physical changes for both girls and boys include growth, body hair, skin changes, and sexual maturation. Emotional changes involve mood swings, independence, and developing sexuality. It discusses managing relationships with parents and friends during this time and emphasizes good hygiene.
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This document discusses puberty and the physical changes that occur for both boys and girls. It explains that puberty is triggered by hormones around ages 10-14 when the body changes from a child to an adult. For boys, changes include growth of genitals and body hair, deepening of the voice, and production of sperm. For girls, changes involve breast development, menstrual periods that occur every 23-35 days, growth of body hair, and widening of the hips. The document provides diagrams and explanations of male and female reproductive organs and their functions during puberty and adolescence.
Puberty
The document discusses male and female reproductive systems and puberty. It describes the openings in the male and female reproductive systems. For females, it notes the three openings: the urethra for urine, the vagina where menstrual flow exits, and the anus. It also discusses menstruation and what occurs during ovulation and the menstrual cycle. The document provides tips for girls going through puberty, including caring for skin and hair, managing cramps, and being prepared for their period. It stresses forming healthy relationships and understanding normal feelings of curiosity during puberty.
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Puberty is driven by increasing hormone levels in both boys and girls. For girls, estrogen causes physical changes and mood swings. Boys experience hormonal changes from the brain to the testicles that also result in physical and emotional development. Both girls and boys deal with sudden mood changes and feelings of energy or depression as a normal part of puberty.
Powerpoint puberty part 1, puberty, body changes & differences
This document discusses puberty and the changes that occur during puberty. It explains that puberty is when the body begins to mature into an adult due to sex hormones. Both boys and girls experience physical changes like growth of body hair and changes in body odor. Specifically for boys, it mentions growth of the penis/testes and voice changes. For girls, it mentions breast development and onset of menstruation. It notes there are differences in these changes between individuals and puberty does not happen at the same time or same way for everyone. The document provides resources for where to find more information about puberty.
Puberty
Puberty is the period when children experience physical changes that turn their bodies into those capable of reproduction. Girls typically start puberty earlier than boys. During puberty, both males and females experience growth of sexual organs and body hair. Hormonal changes cause breast growth, menstruation and voice changes in females, and penis and testicle growth and wet dreams in males. Puberty is triggered by genes and hormones in the hypothalamus, pituitary gland and gonads. Taking daily showers, using deodorant and properly caring for hair, skin and teeth are important for hygiene during puberty.
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The document provides information about puberty and the physical and emotional changes that occur during this time of transition from childhood to adulthood. It discusses the changes girls and boys experience, such as growth spurts, body hair development, skin changes, and sexual maturation including the start of menstruation in girls and sperm and erection capabilities in boys. It emphasizes that these changes are normal and occur due to hormonal signals. The document provides diagrams of male and female reproductive systems and explains concepts like fertility, periods, and appropriate hygiene practices during puberty.
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Puberty is the stage of physical maturation triggered by increased secretion of hormones like Luteinizing Hormone and GnRH, resulting in sexual and somatic development. It involves breast development in females starting around age 10-14 and testicular growth in males around age 12-16. Puberty encompasses five stages of physical changes through Tanner stages including growth spurts that make individuals reproductively mature.
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This document discusses puberty and the physical changes that occur for both boys and girls. It explains that puberty is triggered by hormones around ages 10-14 when the body changes from a child to an adult. For boys, changes include growth of genitals and body hair, deepening of the voice, and production of sperm. For girls, changes involve breast development, menstrual periods that occur every 23-35 days, growth of body hair, and widening of the hips. The document provides diagrams and explanations of male and female reproductive organs and their functions during puberty and adolescence.
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The document discusses male and female reproductive systems and puberty. It describes the openings in the male and female reproductive systems. For females, it notes the three openings: the urethra for urine, the vagina where menstrual flow exits, and the anus. It also discusses menstruation and what occurs during ovulation and the menstrual cycle. The document provides tips for girls going through puberty, including caring for skin and hair, managing cramps, and being prepared for their period. It stresses forming healthy relationships and understanding normal feelings of curiosity during puberty.
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This document discusses puberty and the changes that occur during puberty. It explains that puberty is when the body begins to mature into an adult due to sex hormones. Both boys and girls experience physical changes like growth of body hair and changes in body odor. Specifically for boys, it mentions growth of the penis/testes and voice changes. For girls, it mentions breast development and onset of menstruation. It notes there are differences in these changes between individuals and puberty does not happen at the same time or same way for everyone. The document provides resources for where to find more information about puberty.
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Puberty is the period when children experience physical changes that turn their bodies into those capable of reproduction. Girls typically start puberty earlier than boys. During puberty, both males and females experience growth of sexual organs and body hair. Hormonal changes cause breast growth, menstruation and voice changes in females, and penis and testicle growth and wet dreams in males. Puberty is triggered by genes and hormones in the hypothalamus, pituitary gland and gonads. Taking daily showers, using deodorant and properly caring for hair, skin and teeth are important for hygiene during puberty.
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The document provides information about puberty and the physical and emotional changes that occur during this time of transition from childhood to adulthood. It discusses the changes girls and boys experience, such as growth spurts, body hair development, skin changes, and sexual maturation including the start of menstruation in girls and sperm and erection capabilities in boys. It emphasizes that these changes are normal and occur due to hormonal signals. The document provides diagrams of male and female reproductive systems and explains concepts like fertility, periods, and appropriate hygiene practices during puberty.
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Puberty is the stage of physical maturation triggered by increased secretion of hormones like Luteinizing Hormone and GnRH, resulting in sexual and somatic development. It involves breast development in females starting around age 10-14 and testicular growth in males around age 12-16. Puberty encompasses five stages of physical changes through Tanner stages including growth spurts that make individuals reproductively mature.
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Puberty is the process of physical and mental changes during adolescence caused by hormones. Girls typically start puberty between ages 10-11 and finish between 15-17, while boys start between 11-12 and finish between 16-17. Changes include growth spurts, body hair, body odor, acne, voice changes in boys, and menstruation in girls. Puberty prepares the body for adulthood and ends between ages 18-20.
Puberty Boys
This document discusses the changes that occur during puberty for boys. It covers physical changes like growth of body hair, facial hair and genitals. It also discusses emotional changes like mood swings. Specific physical changes covered include growth of body and muscles, deepening of voice, development of sweat glands and acne. The document provides information on erections, ejaculation and nocturnal emissions as normal parts of puberty. It concludes by offering tips for personal hygiene and lifestyle during puberty.
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The document discusses several topics related to puberty in girls and boys:
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- It explains that girls are born with all the eggs they will ever have and ovaries typically release one egg per month through ovulation.
- Periods usually last 3-7 days and occur about once a month, though cycles can vary between 21-35 days.
- For boys, puberty brings body growth, voice changes, and new hair growth typically between ages 9-14, though everyone develops at their own pace.
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This document summarizes the stages of puberty for both girls and boys. It explains that puberty typically begins between ages 8-14, with average ages being 11 for girls and 12 for boys. The first signs for both include breast and genital growth and pubic hair development. Later signs involve continued physical changes such as menstruation in girls and voice deepening in boys. After about 4 years, puberty is complete and physical maturity is reached. The document also notes mood changes can occur emotionally during this transition to adulthood.
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This document provides information about puberty, including what it is, common changes that occur, and differences between boys and girls. It explains that puberty is when the body begins changing into an adult due to sex hormones. Common changes in boys include growth of genitals and body/facial hair, while girls experience breast development and menstruation. It notes that these changes happen to all individuals at different rates and that no two people experience puberty exactly the same. The document aims to inform students about typical pubertal development.
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Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when an adult body has been developed. Until the maturation of their reproductive capabilities, the pre-pubertal physical differences between boys and girls are the external sex organs.
On average, girls begin puberty around ages 10–11; boys around ages 11–12. Girls usually complete puberty around ages 15–17, while boys usually complete puberty around ages 16–17. The major landmark of puberty for females is menarche, the onset of menstruation, which occurs on average between ages 12–13; for males, it is the first ejaculation, which occurs on average at age 13. In the 21st century, the average age at which children, especially girls, reach puberty is lower compared to the 19th century, when it was 15 for girls and 16 for boys. This can be due to any number of factors, including improved nutrition resulting in rapid body growth, increased weight and fat deposition, or exposure to endocrine disruptor such as xenoestrogens, which can at times be due to food consumption or other environmental factors. Puberty which starts earlier than usual is known as precocious puberty. Puberty which starts later than usual is known as delayed puberty.
Notable among the morphologic changes in size, shape, composition, and functioning of the pubertal body, is the development of secondary sex characteristics, the "filling in" of the child's body; from girl to woman, from boy to man. Derived from the Latin puberatum (age of maturity), the word puberty describes the physical changes to sexual maturation, not the psychosocial and cultural maturation denoted by the term adolescent development in Western culture, wherein adolescence is the period of mental transition from childhood to adulthood, which overlaps much of the body's period of puberty.
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Puberty is the process of physical changes during which a child's body matures into an adult body capable of sexual reproduction. The document lists some of the common physical changes boys and girls experience during puberty, such as growth spurts, development of sexual characteristics like breasts and facial hair, skin changes, and the start of menstruation in girls. It notes that puberty typically begins between ages 10-14, with girls starting earlier, and that the hormonal changes can cause mood swings and other emotional experiences.
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This document provides information about puberty and the physical and emotional changes that occur during this time. It discusses what puberty is, when the changes typically happen for boys and girls, and the key physical changes for each sex. These include growth, body hair development, skin changes, and sexual maturation of the reproductive organs. The roles of hormones like testosterone and estrogen in driving puberty are also explained. The document answers common questions about periods and erections/ejaculation. It promotes healthy hygiene practices for one's changing body.
pubertypresentation-150614044129-lva1-app6892.pdf
This document discusses puberty and the changes that occur during puberty for both boys and girls. It explains that puberty is triggered by hormones between ages 8-17 and causes physical changes like growth of reproductive organs, body hair, skin changes, and more. For girls, it specifically outlines changes like breast growth, menstruation, and use of pads/tampons. For boys, it outlines changes like voice deepening, growth of genitals and body hair, and sperm/erection processes. The document aims to inform youth about typical pubertal changes in a factual way.
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this is my own understanding , if there is anything wrong please feel free to contact me email: xanaf05@hotmail.com
Puberty
Puberty is the process of physical and mental changes during adolescence caused by hormones. Girls typically start puberty between ages 10-11 and finish between 15-17, while boys start between 11-12 and finish between 16-17. Changes include growth spurts, body hair, body odor, acne, voice changes in boys, and menstruation in girls. Puberty prepares the body for adulthood and ends between ages 18-20.
Puberty Boys
This document discusses the changes that occur during puberty for boys. It covers physical changes like growth of body hair, facial hair and genitals. It also discusses emotional changes like mood swings. Specific physical changes covered include growth of body and muscles, deepening of voice, development of sweat glands and acne. The document provides information on erections, ejaculation and nocturnal emissions as normal parts of puberty. It concludes by offering tips for personal hygiene and lifestyle during puberty.
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The document discusses several topics related to puberty in girls and boys:
- It describes some of the physical changes girls experience during puberty like breast development between ages 8-13 and that breasts usually continue growing until ages 17-18.
- It explains that girls are born with all the eggs they will ever have and ovaries typically release one egg per month through ovulation.
- Periods usually last 3-7 days and occur about once a month, though cycles can vary between 21-35 days.
- For boys, puberty brings body growth, voice changes, and new hair growth typically between ages 9-14, though everyone develops at their own pace.
Report stages of puberty
This document summarizes the stages of puberty for both girls and boys. It explains that puberty typically begins between ages 8-14, with average ages being 11 for girls and 12 for boys. The first signs for both include breast and genital growth and pubic hair development. Later signs involve continued physical changes such as menstruation in girls and voice deepening in boys. After about 4 years, puberty is complete and physical maturity is reached. The document also notes mood changes can occur emotionally during this transition to adulthood.
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This document provides information about puberty, including what it is, common changes that occur, and differences between boys and girls. It explains that puberty is when the body begins changing into an adult due to sex hormones. Common changes in boys include growth of genitals and body/facial hair, while girls experience breast development and menstruation. It notes that these changes happen to all individuals at different rates and that no two people experience puberty exactly the same. The document aims to inform students about typical pubertal development.
Stages and Signs of Puberty
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when an adult body has been developed. Until the maturation of their reproductive capabilities, the pre-pubertal physical differences between boys and girls are the external sex organs.
On average, girls begin puberty around ages 10–11; boys around ages 11–12. Girls usually complete puberty around ages 15–17, while boys usually complete puberty around ages 16–17. The major landmark of puberty for females is menarche, the onset of menstruation, which occurs on average between ages 12–13; for males, it is the first ejaculation, which occurs on average at age 13. In the 21st century, the average age at which children, especially girls, reach puberty is lower compared to the 19th century, when it was 15 for girls and 16 for boys. This can be due to any number of factors, including improved nutrition resulting in rapid body growth, increased weight and fat deposition, or exposure to endocrine disruptor such as xenoestrogens, which can at times be due to food consumption or other environmental factors. Puberty which starts earlier than usual is known as precocious puberty. Puberty which starts later than usual is known as delayed puberty.
Notable among the morphologic changes in size, shape, composition, and functioning of the pubertal body, is the development of secondary sex characteristics, the "filling in" of the child's body; from girl to woman, from boy to man. Derived from the Latin puberatum (age of maturity), the word puberty describes the physical changes to sexual maturation, not the psychosocial and cultural maturation denoted by the term adolescent development in Western culture, wherein adolescence is the period of mental transition from childhood to adulthood, which overlaps much of the body's period of puberty.
Health Puberty presentation
This document provides information about puberty and living a healthy lifestyle for young women. It discusses the stages of puberty and menstrual hygiene, including keeping track of periods and maintaining a feminine hygiene kit. It also addresses the topics of sex, abstinence, and sexually transmitted diseases, noting that abstinence is the only way to completely prevent STDs while also discussing prevention through communication with doctors. Finally, it emphasizes the importance of a healthy lifestyle including a balanced diet and physical activity for overall wellness.
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Puberty brings physical and mental changes for both girls and boys as they enter adolescence and reproductive maturity. For girls, this includes breast and genital development, the start of menstruation, and increased body fat and hair growth. Boys experience growth of genitals and muscles, widening shoulders, voice deepening, and new hair patterns. Both sexes go through changes in thinking, seeking independence while also wanting social acceptance, and developing interest in their sexuality and bodies.
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This document discusses the physical and mental changes that occur during puberty. It explains that puberty typically begins between ages 9-14, when hormones trigger dramatic changes in the body. For females, changes include breast development, hip broadening, and the start of menstruation. For males, changes involve growth of the shoulders, development of muscles, enlargement of the Adam's apple, and a deepening voice. The changes are caused by increases in sex hormones like testosterone and estrogen.
Puberty
Puberty is the process of physical changes during which a child's body matures into an adult body capable of sexual reproduction. The document lists some of the common physical changes boys and girls experience during puberty, such as growth spurts, development of sexual characteristics like breasts and facial hair, skin changes, and the start of menstruation in girls. It notes that puberty typically begins between ages 10-14, with girls starting earlier, and that the hormonal changes can cause mood swings and other emotional experiences.
Biological differences in male and female
Biological differences in male and female Chaudhary Charan singh Haryana Agriculture University, Hisar, Haryana
Sex is biologically determined by X and Y chromosomes, which trigger development of either male or female internal reproductive systems before birth. Hormones like testosterone and estrogen then influence further physical sex differentiation and sexual maturation. Studies have found correlations between higher levels of testosterone and more masculine behaviors in both males and females, such as increased aggression and preference for stereotypically male toys. Sex chromosome abnormalities can also influence physical and behavioral traits, like Klinefelter syndrome causing feminine characteristics in XY males or Turner syndrome resulting in short stature and infertility in XO females.What’S Going On Down There
This document is a guide to puberty that discusses the physical and emotional changes that occur during adolescence. It covers topics like hair growth, growth spurts, weight gain, acne, body odor, breast/genital development, menstruation, and advanced social/emotional development. The guide explains that puberty is triggered by hormones and causes the body to mature into an adult form through various normal changes between the ages of 8-14. It aims to alleviate worries about puberty by presenting the process as natural and common to all adolescents.
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Puberty is the process of physical maturation and change where a child's body becomes an adult body capable of sexual reproduction and parenting children. It typically occurs between ages 10-16 and brings about important developmental changes like growth of breasts and widening of hips in girls, as well as deepening of the voice and growth of body hair in boys. While puberty involves significant biological changes, it is a natural process that every human must go through as part of the transition to adulthood and the ability to reproduce.
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Angelman Syndrome: Kelsey Blackburn
Angelman syndrome is a genetic disorder characterized by developmental delay, neurological problems, and other symptoms like hyperactivity, seizures, sleep issues, frequent smiling and laughter, speech impairments, and balance problems. It is caused by absence of a gene inherited from the mother or inheritance of both copies of chromosome 15 from the father. While there is no cure, therapies can help manage symptoms. It is estimated about 1,000 cases occur annually in the US and Canada.
Angelman syndrome presentation By Angel Pantoja
Angelman Syndrome is a neuro-genetic disorder characterized by severe intellectual and developmental disability, seizures, jerky movements, frequent laughter or smiling, and usually a happy attitude. It is caused by deletion or corruption of a gene on chromosome 15 inherited from the mother. There is no standard treatment but therapy exists to treat behavioral issues and new drugs help control neurological and movement symptoms, while research studies folic acid and betaine.
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1. The document discusses adolescent reproductive and sexual health, outlining physical, emotional, cognitive, social, and spiritual changes that occur during puberty for both males and females.
2. It describes the stages of puberty for females and males, including physical changes like growth of breasts and pubic hair, as well as emotional changes related to hormones and peer/social influences.
3. Common problems during puberty are discussed, such as stress, depression, eating disorders, acne, and concerns about physical development, as well as risky behaviors some teenagers engage in to cope. Counseling is mentioned as an important part of healthcare during this time.
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Types of Development
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Eating disorders
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Bibliography
Stages of Growth and Development. ppt for free
This document outlines the typical stages of human growth and development from infancy through late adulthood. It then focuses on the adolescent stage, describing the physical, intellectual, emotional, social, and moral changes that occur during puberty and teenage years, such as sexual maturation, increased abstract thinking, mood swings, importance of peer relationships, and identity exploration. Potential problems that can arise during this period are also discussed, including posture issues, personal hygiene, dental health, lack of sleep, emotional challenges, and navigating social changes.
lecture-ivchn-ii-230810022040-9e7535cd (1).pdf
The document discusses adolescent reproductive and sexual health. It begins by defining adolescence and outlines the objectives of the session. It then discusses puberty and the physical, emotional, social, and cognitive changes that occur during adolescence. Some common reproductive health problems adolescents face are also outlined, including menstrual problems, early and unprotected sex, sexually transmitted infections, and violence. The document stresses the importance of promoting protective factors for adolescent health.
Lecture-IV, CHN-II.pptx
This document provides information about adolescent reproductive and sexual health. It begins by defining adolescence and outlines the objectives of the session. It then discusses puberty and the physical, emotional, and social changes that occur during adolescence. The document defines reproductive health and sexual health. It describes the stages of puberty for males and females and identifies common problems during puberty. Finally, it discusses the importance of paying attention to adolescent health.
Puberty & Menopause
This document discusses the physiology of puberty and menopause. It defines puberty and explains the stages of puberty using Tanner's staging for both males and females. The document outlines the structural, functional and psychological changes that occur during puberty, including the role of hormones like leptin in triggering the onset of puberty. It also describes disorders of puberty like precocious and delayed puberty. The document defines menopause and discusses the mechanism and features and management of menopause.
Fully alive 7 growth and change
The document discusses changes that occur in the human body during two periods of rapid development - infancy and puberty. It then provides details on the sexual characteristics and fertility cycles of both males and females. For females, it describes the menstrual cycle and signs of fertility such as cervical mucus. For males, it explains sperm production and storage, as well as signs like nocturnal emissions. Finally, it outlines the five stages of secondary sex characteristic development for both sexes during puberty.
Chapter11 HDEV
Adolescence involves significant physical, cognitive, and social changes. Puberty is driven by hormonal changes that trigger physical maturation including growth spurts and development of primary and secondary sex characteristics. Cognitively, adolescents develop formal operational thought including hypothetical thinking and sophisticated use of symbols. Socially, peer relationships become important and school transitions can be challenging. Adolescents navigate changes in relationships, identity, and morality.
Reaching the age of adolescence by gaurav ghankhede
Reaching the age Reaching the age of adolescence by gaurav ghankhedeof adolesceReaching the age of adolescence by gaurav ghankhedence by Reaching the age of adolescence by gaurav ghankhede Reaching the age of adolescence by gaurav Reaching the age of adolescence by gaurav ghankhede
Similar to reaching age of adolescence.pptx (20)
pubertypresentation-150614044129-lva1-app6892.pptx
pubertypresentation-150614044129-lva1-app6892.pptx
Cbse Class 8 Science - Chapter 10 Reaching the Age of Adolescence PPT
Cbse Class 8 Science - Chapter 10 Reaching the Age of Adolescence PPT
Health grade 7 first quarter Holistic Health and Its Five Dimensions
Health grade 7 first quarter Holistic Health and Its Five Dimensions
Lesson 6_Science 5 Q1W6_Human Reproductive System.pptx
Lesson 6_Science 5 Q1W6_Human Reproductive System.pptx
Reaching the age of adolescence by gaurav ghankhede
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light.pptx
This document discusses properties of light and vision. It defines luminous objects as those that produce their own light, like the sun and fire, and non-luminous objects as those that are visible through reflected light, like tables and planets. It discusses the rectilinear propagation of light in a straight line and the reflection of light. Key terms covered include transparent, translucent, opaque, incident rays, and reflected rays. Students are assigned homework questions to classify materials as luminous or non-luminous and as transparent, translucent or opaque, and to answer questions about reflections and looking at the sun.
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This document discusses the properties and behavior of light, including reflection. It begins by defining light as a form of radiation or energy that allows us to see. Light travels in a straight line, and its path can be changed through reflection off shiny surfaces like mirrors. When light hits a mirror, it changes direction but does not change speed - this is called reflection. Reflection forms virtual images that are upright or inverted relative to the object, and the same distance behind the mirror as the object is in front of it. The document includes questions and activities about light reflection in mirrors and the characteristics of mirror images.
spherical lens.pptx
This document discusses different types of lenses, including convex and concave lenses. A convex lens is thicker at the center and thinner at the edges, forming an image that is real, inverted, and appears close to the lens. A concave lens is thicker at the edges and thinner at the center, forming an image that is virtual, erect, and appears far away. Examples of applications of convex and concave lenses include spectacles, telescopes, binoculars, flashlights, and spy holes. The document asks questions to test understanding of lens properties and applications.
air pollution.pptx
This document discusses air pollution and its causes and effects. It notes that air is composed primarily of nitrogen (78%), oxygen (21%), and argon (1%). It also contains small amounts of carbon dioxide, water vapor, and other gases. Air pollution occurs when harmful substances contaminate the air and affect both living and nonliving things. Some key air pollutants discussed include carbon monoxide, smog, sulfur dioxide, and chlorofluorocarbons. The document lists various sources of air pollution like automobile exhaust, burning of fuels, and power plants. Respiratory diseases are among the health effects of air pollution.
Nutritional health.pptx
The document discusses nutrition, health, and lifestyle choices for adolescents. It emphasizes the importance of a balanced diet with proteins, carbohydrates, vitamins, minerals, and fats for growth. It also stresses the importance of personal hygiene like daily bathing, cleanliness, and managing menstrual cycles. The document warns against drug use, noting drugs can affect health and taking drugs with syringes can transmit diseases like AIDS.
sex determination.pptx
Sex determination in humans is determined by chromosomes. Each human cell contains 23 pairs of chromosomes, including one pair of sex chromosomes. Females have two X chromosomes, while males have one X and one Y chromosome. The Y chromosome carries the gene that determines male development.
Hormones play an important role in reproduction and development. In insects and frogs, thyroid hormones control the process of metamorphosis by stimulating developmental changes from larvae to adult forms. Thyroxine released by the thyroid gland triggers metamorphosis in frogs.
secondary sexual character.pptx
This document discusses secondary sexual characteristics and reproductive phases in humans. It explains that:
- Secondary sexual characteristics, such as facial hair in boys and breast development in girls, are physical changes that occur during adolescence due to hormones released by glands.
- The reproductive phase begins at puberty when ovaries and testes start producing gametes. In females, this phase typically lasts from ages 10-12 to 45-50 years, beginning with menarche and ending with menopause.
- The menstrual cycle occurs as the ovaries release eggs, the uterus lining thickens, and if fertilization does not occur the lining is shed through menstruation.
Electric current & its effect.pptx
This document discusses electric current and its effects. It explains that:
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EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
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−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
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8.Isolation of pure cultures and preservation of cultures.pdf
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reaching age of adolescence.pptx
- 1. MM Reaching the age of adolescence Sneha Integrated B.Sc. – B.Ed.(Medical)
- 4. ADOLESCENCE
- 5. Puberty
- 6. Tt Tampon
- 7. Have you noticed a change in your voice since childhood? What change is that?
- 8. • Increaseinheight • Changeinbodyshape • Changeinvoicepattern • Changeinactivityofsweatand sebaceousglands • Changesinsexorgans • Changeinintellectuallevel Changes take place during puberty
- 9. Situation This is just a play of hormones in your body. Till 18 your body will be fine
- 10. In boys there in growth of beard. have you ever seen girls with a long or trimmed beard?
- 11. In boys • Appearance of moustaches and beard. • Growth of hair on the chest, under the arms and pubic area. In girls • Development of breasts. • The growth of hair under the arms and the pubic area. Secondary sexual characters
- 14. Hormones
- 15. Characteristics of hormones • Act as chemical messengers. • Secreted by living cells/tissues or organs called glands. • Secreted in small very small quantities. • Act upon specific cells, tissues, or organs called target sites.
- 16. Thankyou