Unit 3
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This document summarizes the key stages of human reproduction. It describes the differences between male and female sex cells, the process of fertilization where an egg and sperm meet, and fetal development over a period of 9 months inside the mother's uterus protected by the amniotic sac. The document is intended to teach about the human reproductive system and the birth process through questions and activities.
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Human repro part2
1. The document discusses reproduction in humans, including ante-natal care for the mother during pregnancy and care for the newborn baby. It emphasizes the importance of diet, exercise, and avoiding harmful substances during pregnancy.
2. Breastfeeding is described as important for providing nutrients and antibodies to help the baby grow and avoid infection. Other topics covered include birth control methods and some common sexually transmitted infections.
Reaching The Age Of Adolosence Class 8
This PPT Is made by Rehet Kaur Bhatia 8D And Is made with a lot of hardwork and Peace and it is not to copy . About the chapter The topic of Adolescence is one of the important concepts in science. It is very important to grasp every bit of this chapter as they are basics for all your future endeavours.
Reproduction in animals
Reproduction allows organisms to produce new individuals of the same kind and ensures species survival over time. It occurs through sexual reproduction, involving the union of male and female gametes, or asexually without gametes. Sexual reproduction in animals includes internal and external fertilization and development of the zygote into an embryo and fetus before birth or hatching. Offspring then develop into adults through growth or metamorphosis. Asexual reproduction happens through budding or binary fission.
Menstruation and ovulation
The menstrual cycle occurs roughly every 28 days after puberty, when an ovum is released from the ovaries and travels to the uterus, where it may be fertilized by a sperm if encountered. If fertilization does not occur, the ovum and some blood and tissue are shed from the uterus in a process called menstruation. Genes from both the mother's ovum and father's sperm combine at fertilization to determine the characteristics inherited from each parent.
Male and female reproductive systems
Primary sexual characteristics refer to the reproductive organs that distinguish males and females, such as ovaries and testicles that produce eggs and sperm respectively. Secondary sexual characteristics are other physical differences like wider hips in women and more body hair in men. The reproductive systems of both males and females are described, including organs like the uterus that supports pregnancy in females and the structures like the vas deferens that transport sperm in males.
How babies are born
The process of human reproduction begins with a male sperm cell fertilizing a female egg cell. The fertilized egg travels to the uterus and begins dividing, first forming a zygote, then an embryo. Around 8 weeks, the embryo develops into a foetus, which grows inside the uterus protected by the amniotic sac and receiving nutrients through the umbilical cord. After 9 months of development, birth occurs.
Cbse Class 8 Science - Chapter 10 Reaching the Age of Adolescence PPT
This document provides information about adolescence and puberty in humans. It discusses that adolescence begins around age 11 and lasts until 18-19 years old, marking the transition from childhood to adulthood. Puberty is the stage of life where the body becomes capable of reproduction, typically occurring between ages 11-16 in boys and 10-15 in girls. The document outlines the physical changes that occur during puberty, including increased height and changes in body shape, development of hair and skin, voice changes, and development of sex organs and secondary sexual characteristics. These changes are controlled by hormones like testosterone and estrogen. It also discusses the menstrual cycle in females and how sex is determined in babies.
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
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Human repro part2
1. The document discusses reproduction in humans, including ante-natal care for the mother during pregnancy and care for the newborn baby. It emphasizes the importance of diet, exercise, and avoiding harmful substances during pregnancy.
2. Breastfeeding is described as important for providing nutrients and antibodies to help the baby grow and avoid infection. Other topics covered include birth control methods and some common sexually transmitted infections.
Reaching The Age Of Adolosence Class 8
This PPT Is made by Rehet Kaur Bhatia 8D And Is made with a lot of hardwork and Peace and it is not to copy . About the chapter The topic of Adolescence is one of the important concepts in science. It is very important to grasp every bit of this chapter as they are basics for all your future endeavours.
Reproduction in animals
Reproduction allows organisms to produce new individuals of the same kind and ensures species survival over time. It occurs through sexual reproduction, involving the union of male and female gametes, or asexually without gametes. Sexual reproduction in animals includes internal and external fertilization and development of the zygote into an embryo and fetus before birth or hatching. Offspring then develop into adults through growth or metamorphosis. Asexual reproduction happens through budding or binary fission.
Menstruation and ovulation
The menstrual cycle occurs roughly every 28 days after puberty, when an ovum is released from the ovaries and travels to the uterus, where it may be fertilized by a sperm if encountered. If fertilization does not occur, the ovum and some blood and tissue are shed from the uterus in a process called menstruation. Genes from both the mother's ovum and father's sperm combine at fertilization to determine the characteristics inherited from each parent.
Male and female reproductive systems
Primary sexual characteristics refer to the reproductive organs that distinguish males and females, such as ovaries and testicles that produce eggs and sperm respectively. Secondary sexual characteristics are other physical differences like wider hips in women and more body hair in men. The reproductive systems of both males and females are described, including organs like the uterus that supports pregnancy in females and the structures like the vas deferens that transport sperm in males.
How babies are born
The process of human reproduction begins with a male sperm cell fertilizing a female egg cell. The fertilized egg travels to the uterus and begins dividing, first forming a zygote, then an embryo. Around 8 weeks, the embryo develops into a foetus, which grows inside the uterus protected by the amniotic sac and receiving nutrients through the umbilical cord. After 9 months of development, birth occurs.
Cbse Class 8 Science - Chapter 10 Reaching the Age of Adolescence PPT
This document provides information about adolescence and puberty in humans. It discusses that adolescence begins around age 11 and lasts until 18-19 years old, marking the transition from childhood to adulthood. Puberty is the stage of life where the body becomes capable of reproduction, typically occurring between ages 11-16 in boys and 10-15 in girls. The document outlines the physical changes that occur during puberty, including increased height and changes in body shape, development of hair and skin, voice changes, and development of sex organs and secondary sexual characteristics. These changes are controlled by hormones like testosterone and estrogen. It also discusses the menstrual cycle in females and how sex is determined in babies.
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Human reproduction
Human reproduction involves the union of male and female reproductive cells. In humans, sexual reproduction occurs through the fertilization of an ovum by a spermatozoon within the female's reproductive tract. At puberty, females develop breasts and pubic hair and begin menstruating monthly due to the maturation of their ovaries and production of eggs and hormones. Males experience growth of pubic hair and facial hair at puberty along with a deepening voice due to increased hormone production by the testes. Fertilization usually occurs within the fallopian tubes after intercourse, when a sperm unites with an egg to form a zygote that implants in the uterus and develops into an embryo and eventually a fetus.
Sexual characteristics
Puberty is when the reproductive system matures, triggered by hormones from the pituitary gland, and results in secondary sexual characteristics developing between ages 11-15 such as lower voices and more muscle mass in boys and higher voices, breasts, and wider hips in girls. During puberty, one egg matures and is released each month through the Fallopian tubes, and if not fertilized by sperm, it leaves the body through the vagina along with some bleeding, known as menstruation or a period. The development of sexual organs both internally like ovaries and testes and externally like penises and vulvas enable human reproduction.
Human Reproduction
The male reproductive system produces and delivers sperm. The testes produce sperm in the seminiferous tubules which then travel through the epididymis, vas deferens and urethra. During ejaculation, sperm mix with fluids from the seminal vesicles, prostate and bulbourethral glands to form semen. The female reproductive system prepares for possible pregnancy each month by releasing an egg. If fertilized, the uterus nourishes the embryo through gestation and birth. The menstrual and ovarian cycles coordinate to release an egg and prepare the uterus.
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The document provides an overview of the human reproductive system and process of reproduction. It describes the male and female reproductive cells and systems, including the testes, ovaries, uterus and other organs. It explains fertilization occurs when an egg and sperm join in the fallopian tubes. Pregnancy involves development of the embryo and fetus over 9 months as it is nourished through the placenta. Labor concludes pregnancy in three phases as contractions widen the birth canal for delivery of the baby.
Reproduction in animals
1. The document discusses different modes of reproduction in animals including asexual reproduction through binary fission and budding, as well as sexual reproduction involving male and female gametes and fertilization.
2. It describes sexual reproduction in more detail, including internal and external fertilization and oviparous and viviparous animals.
3. Key aspects of human sexual reproduction are outlined for both sexes, including reproductive organs and their functions in producing and transporting gametes and embryos.
Puberty
This document provides information about puberty and reproductive development in females. It discusses physical changes during puberty like breast development, hip widening, and growth of pubic hair. It also describes the female reproductive system including the uterus, ovaries, fallopian tubes, and vagina. The menstrual cycle is explained in detail, covering hormone regulation, egg maturation and release, potential fertilization, and menstruation if not pregnant. Pregnancy and the stages of development are briefly outlined as well.
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The document discusses sexual intercourse and fertilization. It explains that pregnancy can occur if semen or sperm enters the vagina, as sperm contains sperm that can fertilize an egg. It then describes the process of fertilization, where a sperm penetrates an egg and fuses with it to form a zygote. It further summarizes the development of the embryo and formation of the placenta and umbilical cord.
Human reproduction
This document defines and describes human reproduction, including primary and secondary sex characteristics, reproductive cells, and the male and female reproductive systems. It explains that fertilization occurs when an ovum and sperm join to form a zygote, which implants in the uterus and becomes an embryo. Pregnancy is described, including the protective structures of the placenta, umbilical cord, and amniotic sac that develop. The stages of fetal development and labor are outlined, with labor involving dilation of the cervix, baby expulsion, and delivery of the afterbirth.
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Adolescence typically begins around age 11 and lasts until 18-19 years old, marking the transition between childhood and adulthood. During this time, puberty causes the body to undergo many changes through the increased production of hormones like estrogen and testosterone. These changes include increased height and weight, development of secondary sex characteristics like growth of body hair and changes in voice, and attainment of reproductive maturity. Maintaining good nutrition, hygiene, and exercise habits is important for health during this period of rapid physical and mental development.
Human reproduction
Human reproduction involves sexual reproduction between two individuals. Fertilization occurs internally in the fallopian tubes where the sperm fertilizes the egg to form a zygote. The zygote then implants in the uterus and develops as an embryo for around nine months, receiving nutrients and oxygen from the placenta via the umbilical cord, in a process called gestation. The fetus continues developing over three trimesters until childbirth, where contractions help deliver the baby through the birth canal.
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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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The document summarizes the human reproductive system. It describes that reproduction allows living things to create offspring similar to themselves. It then outlines the primary and secondary sexual features that characterize the male and female reproductive systems. The reproductive cells, ovaries, uterus, vagina, vulva, fallopian tubes, testicles, vas deferens, urethra, penis, seminal vesicles and prostate are defined. Fertilization is defined as the union of sperm and ovum in the fallopian tubes, and menstruation occurs if the ovum is not fertilized. The development of an embryo is described including the placenta, umbilical cord, and amniotic sac.
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This document discusses the human reproductive system. It describes the primary and secondary sexual characteristics that differentiate males and females. It then explains the female reproductive system including the ovaries, uterus, Fallopian tubes, and vagina. The male reproductive system includes the testicles, vas deferens, urethra, seminal vesicles, and prostate. Fertilization occurs when an ovum and sperm join to form a zygote. Pregnancy lasts about 9 months as the embryo develops into a fetus and eventually a baby ready for birth. Labor involves three phases of dilation, expulsion, and delivery of the afterbirth.
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The document discusses reproduction and growth in humans. It describes the processes of meiosis, mitosis, gamete formation, fertilization, and the development of the zygote. It explains sexual and asexual reproduction, comparing their key differences. The document also details male and female gamete formation, the structure of sperm cells, the menstrual cycle, hormones involved and their effects, and pregnancy.
Reproduction in animals
Reproduction can occur asexually through processes like budding, regeneration and fragmentation, or sexually which involves the fusion of male and female gametes. Sexual reproduction is more common and promotes genetic variation and evolution. It requires gametogenesis to produce gametes, and mating or copulation for the contribution and fusion of gametes through fertilization. The male reproductive system includes testes which produce sperm and sex hormones, and accessories like seminal vesicles and prostate glands which secrete fluids for semen. The female system includes ovaries which produce eggs and hormones, fallopian tubes for fertilization, a uterus for pregnancy, and a vagina for delivery.
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The document discusses the physical changes that occur during puberty for both boys and girls. It explains that puberty is triggered by hormonal changes which cause growth and development of secondary sex characteristics. For girls, this includes breast development, hip growth, and the start of the menstrual cycle. For boys, changes include broadening of the shoulders, deepening of the voice, growth of body and facial hair, and the start of sperm production. The document provides detailed information about the female and male reproductive systems and their functions during puberty and adolescence.
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This document summarizes the key stages of human reproduction. It describes the differences between male and female reproductive systems and sex cells. The male sex cell is sperm, while the female is the ovum or egg cell. Fertilization occurs when a sperm fertilizes an ovum to form a zygote. The zygote then develops into an embryo and fetus over a period of 8-9 months, receiving nutrients from the mother in the uterus. Birth occurs after 9 months of development. The document also briefly describes the menstrual cycle in females.
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This document summarizes the key stages of human reproduction. It describes the differences between male and female reproductive systems and sex cells. The male sex cell is sperm, while the female is the ovum or egg cell. Fertilization occurs when a sperm fertilizes an ovum to form a zygote. The zygote then develops into an embryo and fetus over a period of 8-9 months, receiving nutrients from the mother in the uterus. Birth occurs after 9 months of development. The document also briefly describes the menstrual cycle in females.
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This document provides information about human reproduction and sexuality education. It defines the male and female reproductive systems, including the testes, sperm ducts, penis, ovaries, fallopian tubes, uterus, cervix, and vagina. It explains the fertilization process where sperm from the male fertilizes an egg from the female in the fallopian tubes. The document suggests activities like games to learn parts of the reproductive system, story improvisation, viewing educational videos, and discussing topics like abstinence, being faithful, and educating oneself.
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The document describes human reproduction. It explains that sexual reproduction involves the fusion of male and female gametes. The male system produces sperm in the testes and transfers them via the sperm ducts. The female system contains ovaries which hold eggs from birth. At ovulation, an egg is released into the fallopian tubes where fertilization by sperm may occur, forming a zygote. The zygote implants in the uterus and develops via the placenta and umbilical cord until birth.
Human reproduction ppt
The document provides information about human reproduction:
- It describes the male and female reproductive systems and the journey of sperm and egg through the systems. The sperm fertilizes the egg in the fallopian tubes.
- It explains the process of fertilization and the early stages of development from zygote to embryo to fetus. The fetus develops over nine months before birth.
- Key parts of the male system that are mentioned include the testes, penis, and sperm. The female system includes the ovaries, uterus, fallopian tubes, and vagina.
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Human reproduction
Human reproduction involves the union of male and female reproductive cells. In humans, sexual reproduction occurs through the fertilization of an ovum by a spermatozoon within the female's reproductive tract. At puberty, females develop breasts and pubic hair and begin menstruating monthly due to the maturation of their ovaries and production of eggs and hormones. Males experience growth of pubic hair and facial hair at puberty along with a deepening voice due to increased hormone production by the testes. Fertilization usually occurs within the fallopian tubes after intercourse, when a sperm unites with an egg to form a zygote that implants in the uterus and develops into an embryo and eventually a fetus.
Sexual characteristics
Puberty is when the reproductive system matures, triggered by hormones from the pituitary gland, and results in secondary sexual characteristics developing between ages 11-15 such as lower voices and more muscle mass in boys and higher voices, breasts, and wider hips in girls. During puberty, one egg matures and is released each month through the Fallopian tubes, and if not fertilized by sperm, it leaves the body through the vagina along with some bleeding, known as menstruation or a period. The development of sexual organs both internally like ovaries and testes and externally like penises and vulvas enable human reproduction.
Human Reproduction
The male reproductive system produces and delivers sperm. The testes produce sperm in the seminiferous tubules which then travel through the epididymis, vas deferens and urethra. During ejaculation, sperm mix with fluids from the seminal vesicles, prostate and bulbourethral glands to form semen. The female reproductive system prepares for possible pregnancy each month by releasing an egg. If fertilized, the uterus nourishes the embryo through gestation and birth. The menstrual and ovarian cycles coordinate to release an egg and prepare the uterus.
Human reproduction by Yulia
The document provides an overview of the human reproductive system and process of reproduction. It describes the male and female reproductive cells and systems, including the testes, ovaries, uterus and other organs. It explains fertilization occurs when an egg and sperm join in the fallopian tubes. Pregnancy involves development of the embryo and fetus over 9 months as it is nourished through the placenta. Labor concludes pregnancy in three phases as contractions widen the birth canal for delivery of the baby.
Reproduction in animals
1. The document discusses different modes of reproduction in animals including asexual reproduction through binary fission and budding, as well as sexual reproduction involving male and female gametes and fertilization.
2. It describes sexual reproduction in more detail, including internal and external fertilization and oviparous and viviparous animals.
3. Key aspects of human sexual reproduction are outlined for both sexes, including reproductive organs and their functions in producing and transporting gametes and embryos.
Puberty
This document provides information about puberty and reproductive development in females. It discusses physical changes during puberty like breast development, hip widening, and growth of pubic hair. It also describes the female reproductive system including the uterus, ovaries, fallopian tubes, and vagina. The menstrual cycle is explained in detail, covering hormone regulation, egg maturation and release, potential fertilization, and menstruation if not pregnant. Pregnancy and the stages of development are briefly outlined as well.
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The document discusses sexual intercourse and fertilization. It explains that pregnancy can occur if semen or sperm enters the vagina, as sperm contains sperm that can fertilize an egg. It then describes the process of fertilization, where a sperm penetrates an egg and fuses with it to form a zygote. It further summarizes the development of the embryo and formation of the placenta and umbilical cord.
Human reproduction
This document defines and describes human reproduction, including primary and secondary sex characteristics, reproductive cells, and the male and female reproductive systems. It explains that fertilization occurs when an ovum and sperm join to form a zygote, which implants in the uterus and becomes an embryo. Pregnancy is described, including the protective structures of the placenta, umbilical cord, and amniotic sac that develop. The stages of fetal development and labor are outlined, with labor involving dilation of the cervix, baby expulsion, and delivery of the afterbirth.
Reaching the age of adolescence
Adolescence typically begins around age 11 and lasts until 18-19 years old, marking the transition between childhood and adulthood. During this time, puberty causes the body to undergo many changes through the increased production of hormones like estrogen and testosterone. These changes include increased height and weight, development of secondary sex characteristics like growth of body hair and changes in voice, and attainment of reproductive maturity. Maintaining good nutrition, hygiene, and exercise habits is important for health during this period of rapid physical and mental development.
Human reproduction
Human reproduction involves sexual reproduction between two individuals. Fertilization occurs internally in the fallopian tubes where the sperm fertilizes the egg to form a zygote. The zygote then implants in the uterus and develops as an embryo for around nine months, receiving nutrients and oxygen from the placenta via the umbilical cord, in a process called gestation. The fetus continues developing over three trimesters until childbirth, where contractions help deliver the baby through the birth canal.
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.
Human reproduction by Paula Crespo
The document summarizes the human reproductive system. It describes that reproduction allows living things to create offspring similar to themselves. It then outlines the primary and secondary sexual features that characterize the male and female reproductive systems. The reproductive cells, ovaries, uterus, vagina, vulva, fallopian tubes, testicles, vas deferens, urethra, penis, seminal vesicles and prostate are defined. Fertilization is defined as the union of sperm and ovum in the fallopian tubes, and menstruation occurs if the ovum is not fertilized. The development of an embryo is described including the placenta, umbilical cord, and amniotic sac.
Human reproduction by Maria
This document discusses the human reproductive system. It describes the primary and secondary sexual characteristics that differentiate males and females. It then explains the female reproductive system including the ovaries, uterus, Fallopian tubes, and vagina. The male reproductive system includes the testicles, vas deferens, urethra, seminal vesicles, and prostate. Fertilization occurs when an ovum and sperm join to form a zygote. Pregnancy lasts about 9 months as the embryo develops into a fetus and eventually a baby ready for birth. Labor involves three phases of dilation, expulsion, and delivery of the afterbirth.
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The document discusses reproduction and growth in humans. It describes the processes of meiosis, mitosis, gamete formation, fertilization, and the development of the zygote. It explains sexual and asexual reproduction, comparing their key differences. The document also details male and female gamete formation, the structure of sperm cells, the menstrual cycle, hormones involved and their effects, and pregnancy.
Reproduction in animals
Reproduction can occur asexually through processes like budding, regeneration and fragmentation, or sexually which involves the fusion of male and female gametes. Sexual reproduction is more common and promotes genetic variation and evolution. It requires gametogenesis to produce gametes, and mating or copulation for the contribution and fusion of gametes through fertilization. The male reproductive system includes testes which produce sperm and sex hormones, and accessories like seminal vesicles and prostate glands which secrete fluids for semen. The female system includes ovaries which produce eggs and hormones, fallopian tubes for fertilization, a uterus for pregnancy, and a vagina for delivery.
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The document discusses the physical changes that occur during puberty for both boys and girls. It explains that puberty is triggered by hormonal changes which cause growth and development of secondary sex characteristics. For girls, this includes breast development, hip growth, and the start of the menstrual cycle. For boys, changes include broadening of the shoulders, deepening of the voice, growth of body and facial hair, and the start of sperm production. The document provides detailed information about the female and male reproductive systems and their functions during puberty and adolescence.
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Unit 3 (2)
This document summarizes the key stages of human reproduction. It describes the differences between male and female reproductive systems and sex cells. The male sex cell is sperm, while the female is the ovum or egg cell. Fertilization occurs when a sperm fertilizes an ovum to form a zygote. The zygote then develops into an embryo and fetus over a period of 8-9 months, receiving nutrients from the mother in the uterus. Birth occurs after 9 months of development. The document also briefly describes the menstrual cycle in females.
Unit 3 (2)
This document summarizes the key stages of human reproduction. It describes the differences between male and female reproductive systems and sex cells. The male sex cell is sperm, while the female is the ovum or egg cell. Fertilization occurs when a sperm fertilizes an ovum to form a zygote. The zygote then develops into an embryo and fetus over a period of 8-9 months, receiving nutrients from the mother in the uterus. Birth occurs after 9 months of development. The document also briefly describes the menstrual cycle in females.
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The document discusses the five senses - sight, smell, touch, taste, and hearing. It lists the main sensory organs for each sense and provides example questions about the senses. It also includes a matching activity to connect each sense with its sensory organ. The document then shifts to discussing the reproductive system, including differences between male and female anatomy and the stages of life from unborn baby to birth. It provides details about sex cells, fertilization, fetal development, and the menstrual cycle. It includes additional questions and activities about these topics.
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This document provides information about human reproduction and sexuality education. It defines the male and female reproductive systems, including the testes, sperm ducts, penis, ovaries, fallopian tubes, uterus, cervix, and vagina. It explains the fertilization process where sperm from the male fertilizes an egg from the female in the fallopian tubes. The document suggests activities like games to learn parts of the reproductive system, story improvisation, viewing educational videos, and discussing topics like abstinence, being faithful, and educating oneself.
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The document describes human reproduction. It explains that sexual reproduction involves the fusion of male and female gametes. The male system produces sperm in the testes and transfers them via the sperm ducts. The female system contains ovaries which hold eggs from birth. At ovulation, an egg is released into the fallopian tubes where fertilization by sperm may occur, forming a zygote. The zygote implants in the uterus and develops via the placenta and umbilical cord until birth.
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The document provides information about human reproduction:
- It describes the male and female reproductive systems and the journey of sperm and egg through the systems. The sperm fertilizes the egg in the fallopian tubes.
- It explains the process of fertilization and the early stages of development from zygote to embryo to fetus. The fetus develops over nine months before birth.
- Key parts of the male system that are mentioned include the testes, penis, and sperm. The female system includes the ovaries, uterus, fallopian tubes, and vagina.
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1. The male gamete (sperm) fuses with the female gamete (ova/egg) during fertilization to form a zygote.
2. The zygote develops into an embryo, which implants in the uterus and develops further into a fetus through the roles of the placenta and umbilical cord.
3. Childbirth occurs when contractions push the baby through the birth canal, after which the placenta detaches from the uterus and is delivered.
Reprod in humans
1. The male gamete (sperm) fuses with the female gamete (ova/egg) during fertilization to form a zygote.
2. The zygote develops into an embryo that is implanted in the uterus and receives nutrients via the placenta and umbilical cord without mixing of the mother and embryo's blood.
3. Childbirth is triggered by contractions that open the cervix and push the baby through the birth canal, after which the placenta detaches and is delivered.
Human reproduction
Human reproduction occurs through sexual reproduction bringing male and female together. Primary sexual characteristics are present at birth and differ between males and females. During puberty, secondary sexual characteristics develop like breasts or facial hair. Reproductive cells called sperm and ova carry out reproduction. The male reproductive system includes testes, penis and other organs. The female system includes ovaries, uterus, fallopian tubes and other organs. Fertilization happens when a sperm and ovum join to form a zygote. Pregnancy lasts 9 months as the embryo develops protective structures and into a fetus and baby over time. Birth occurs in three stages of dilation, expulsion, and delivery of the afterbirth.
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Human reproduction occurs through sexual reproduction which involves both male and female sex cells. At puberty, individuals develop primary and secondary sexual characteristics that differentiate males and females. Sperm and ova are the reproductive cells in males and females respectively. The male reproductive system includes testes, penis and other organs that produce and transport sperm. The female system includes ovaries, uterus, fallopian tubes and other organs involved in producing and housing an embryo. Fertilization happens when a sperm joins an ovum, forming a zygote that implants in the uterus. Pregnancy lasts 9 months as the embryo develops protected structures until birth.
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This document provides an overview of the human reproductive system. It describes the main structures and functions of both the male and female reproductive systems. In the male system, it outlines the penis, testicles, and epididymis. In the female system, it details the vagina, cervix, uterus, oviducts, and ovaries. It also discusses secondary sex characteristics in males and females. Other sections explain gametogenesis, spermatogenesis and oogenesis, the menstrual cycle, fertilization, implantation and development, and gestation.
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Human reproduction occurs through sexual reproduction. During puberty, between ages 11-15, secondary sex characteristics develop in both males and females to differentiate the sexes. The male reproductive system produces sperm in the testes which are transported through the vas deferens and urethra. The female reproductive system contains ovaries that produce eggs and a uterus for fetal development. Fertilization occurs when an egg and sperm join in the fallopian tubes to create an embryo. Pregnancy lasts around 9 months as the embryo develops structures like the placenta and umbilical cord to receive nutrients until birth.
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1) The document discusses sexual and asexual reproduction in humans. Sexual reproduction involves the fusion of male and female gametes during fertilization, while asexual reproduction involves only one parent and does not involve gametes.
2) It also describes the male and female reproductive systems, including the structures and functions of the testes, ovaries, sperm, and egg. Changes during puberty are also outlined.
3) The menstrual cycle, fertilization process, development of the embryo and fetus, and importance of prenatal care are explained in detail. Risks of smoking, drinking alcohol and inadequate nutrition during pregnancy are highlighted.
The human body and reproduction
The document discusses the stages of human development from infancy to old age. It describes the male and female reproductive systems and their primary and secondary sex characteristics. It explains that fertilization occurs when a sperm cell fuses with an egg cell to form a zygote. Finally, it provides an overview of pregnancy, describing the three trimesters and birth process.
Reproduction and Development Power Point revised feb2018.ppt
After fertilization, the zygote undergoes cell division through cleavage and develops into a morula, then a blastula. The blastula forms a gastrula through cell differentiation and the embryo implants in the uterus. The male reproductive system produces sperm in the testes which is stored and transported via the epididymis, vas deferens, urethra and released through the penis during ejaculation. The female reproductive system contains ovaries which release eggs and produce hormones, fallopian tubes for fertilization, a uterus for implantation and development, and a vagina that serves as the birth canal.
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Unit 2
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Social science, unit 1
The Solar System consists of the Sun and planets that orbit it. There are four inner planets closest to the Sun - Mercury, Venus, Earth, and Mars - and four outer planets farther away - Jupiter, Saturn, Uranus, and Neptune. The Moon is Earth's natural satellite, and it has four phases as it orbits Earth: full moon, first quarter moon, last quarter moon, and new moon. The document also discusses the atmosphere, hydrosphere, geosphere, maps, and geographic coordinates.
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Unit 4
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Bonesandmusclesofthebody 170218174754
The document contains questions asking about various bones and muscles in the human body. It asks about the three bones of the arm, the longest bone in the body (femur), bones in the hand and ribcage, a muscle in the upper leg, muscles in the arm, and to name three muscles and the bones they are attached to. It also asks the student to label a skeleton diagram by writing the names of the bones.
Unit 3 (2)
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Unit 3 (1)
The central plateau divides Spain. The Central System mountain range divides the central plateau into northern and southern subplateaus. Several mountain ranges surround the central plateau, including the Galician Massif, Cantabrian Range, Iberian System, and Sierra Morena nearby, and the Pyrenees and Betic System further away.
Unit 3
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Unit 2 (primera parte)
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Unit 3
- 2. STAGES OF LIFE Unborn baby
- 3. DIFFERENCES BETWEEN MEN AND WOMEN WOMEN MEN Women also have breasts Men have a stronger voice. Softer voice. More hair. Less hair. Wider chest than women. Wider hips.
- 6. SEX CELLS • MALE SEX CELLS – The male sex cells is sperm.
- 7. SEX CELLS • FEMALE SEX CELLS. – The female sex cells is ovum.
- 8. FECUNDATION • If there is any ovum (egg cell) released, the egg cell and the sperm cells meet.
- 9. FECUNDATION • Once a sperm fertilizes an OVUM, it becomes a zygote. The zygote then divides itself to form a very tiny ball called an embryo. The embryo continues downwards and finds itself a confortable place in the uterus.
- 10. QUESTIONS (speaking) • Which are the male sex cells? • Which is the female sex cell? • What is the fecundation?
- 11. FOETAL DEVELOPMENT • The embryo becomes a foetus (say fee-tus) eight weeks after fecundation. The foetus depends upon its mother for protection, oxygen and nutrients as it develops. Inside the uterus, there is a bag called the. ‘Amnion’
- 12. BIRTH • After nine months the baby is fully developed and ready to be born into the big wide world.
- 13. ACTIVITIES • 1.- What is the fertilisation? • 2.- Match the words Male cells sex Meet sperm and ovum Female cells sex 9 months. Pregnancy Sperm Fertilisation Ovum
- 14. JOURNAL • How do you feel today? • What have you learnt today?