1st science 4 fertilization
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The document explains the process of human fertilization. It discusses that ovaries produce egg cells and the hormone estrogen, while testes produce sperm cells and the hormones testosterone and estrogen. Fertilization occurs when an egg and sperm cell unite in one of the fallopian tubes as the egg moves toward the uterus. The moving sperm swim through the uterus and enter the fallopian tube, with one fertilizing the egg to form a zygote.
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Recommended
Human Reproduction- Fertilization and Parthenogenesis- Class 12
Link https://bichep.com/ppt-biology-ncert-based-for-class-11-and-12/
Fertilization is the fusion of haploid gametes, egg and sperm, to form the diploid zygote. Note though there can be subtle differences in the fertilization process which occurs naturally within the body or through reproductive technologies outside the body, the overall product in both cases is a diplod zygote.
Parthenogenesis is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization. In animals, parthenogenesis means development of an embryo from an unfertilized egg cell. In plants parthenogenesis is a component process of apomixis.
Fertilization
Fertilization is the union of an ovum with sperm. It can occur internally or externally. Depending on where development occurs, animals are grouped as oviparous (egg-laying), ovo-viviparous (internal fertilization but external development nourished by yolk), or viviparous (internal fertilization and development nourished by placenta). During fertilization, sperm penetrate the structures surrounding the ovum through the acrosome reaction. Once inside, the sperm fuses with the egg cytoplasm and triggers the formation of a fertilization membrane. The ovum then undergoes its second meiotic division, forming a haploid ovum and polar bodies. The sperm and ovum
Rb3 - Fertilization and Dev't
1. Fertilization occurs through the acrosomal reaction and fusion of the egg and sperm membranes, allowing entry of a single sperm.
2. This triggers the fast block to polyspermy within 1/10th of a second and the cortical reaction, which changes the egg cytoplasm and hardens membranes to prevent multiple fertilization.
3. Pregnancy is divided into three trimesters. The first trimester involves rapid development and differentiation of the embryo. The placenta forms and the embryo implants in the uterine wall.
Human fertilization
Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the uterine tube. The result of this union is the production of a zygote cell, or fertilized egg, initiating prenatal development. Scientists discovered the dynamics of human fertilization in the nineteenth century.[1]
The process of fertilization involves a sperm fusing with an ovum. The most common sequence begins with ejaculation during copulation, follows with ovulation, and finishes with fertilization. Various exceptions to this sequence are possible, including artificial insemination, In vitro fertilization, external ejaculation without copulation, or copulation shortly after ovulation.[2][3][4]Upon encountering the secondary oocyte, the acrosome of the sperm produces enzymes which allow it to burrow through the outer jelly coat of the egg. The sperm plasma then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and the egg travels down the Fallopian tube to reach the uterus.
Ovulation is the release of egg from the ovaries. In humans, this event occurs when the de Graaf's follicles rupture and release the secondary oocyte ovarian cells.[1] After ovulation, during the luteal phase, the egg will be available to be fertilized by sperm. In addition, the uterine lining (endometrium) is thickened to be able to receive a fertilized egg. If no conception occurs, the uterine lining as well as blood will be shed during menstruation.[2]
Human reproduction is any form of sexual reproduction resulting in human fertilization, typically involving sexual intercourse between a man and a woman. During sexual intercourse
Animal fertilization
Fertilization in animals involves the fusion of an egg and sperm to form a zygote and initiate embryo development. It can occur internally, within the female's body, or externally in aquatic environments. There are three key steps to ensure species-specific fertilization: chemotaxis, where sperm are attracted to the egg via chemicals; the acrosome reaction, where the sperm undergoes changes to penetrate the egg; and sperm-egg adhesion, where attachments form between the gametes. Internal fertilization protects developing embryos and results in higher offspring survival for land animals.
Fertilization
1. Capacitation is the process by which sperm gain the ability to fertilize an egg after leaving the male reproductive tract. It involves changes to the sperm membrane and motility that occur as sperm travel through the female reproductive tract.
2. For fertilization to occur, sperm must navigate barriers like cervical mucus, penetrate the zona pellucida surrounding the egg, and fuse with the egg membrane. Binding of sperm to zona pellucida protein ZP3 triggers the acrosome reaction which releases enzymes to penetrate the zona.
3. Fusion of sperm with the egg membrane activates the egg through release of calcium ions and cortical granules, allowing the male and female pronu
Fertilisation in human Being
Gametogenesis is the formation of sperm and eggs, involving spermatogenesis and oogenesis. This produces haploid gametes. The sperm consists of a head, middle piece, and tail, containing structures that aid fertilization. The mature egg is spherical, surrounded by membranes in the ovary. At puberty, sex hormone production increases, triggering physical changes earlier in females than males. The monthly menstrual cycle in females involves four phases and is controlled by hormones, beginning at menarche and ending at menopause. Fertilization, cleavage, blastocyst formation, implantation, and placenta formation occur for successful pregnancy and birth.
Obg ppt
The document summarizes the key stages of fertilization and embryonic development in humans. It describes:
1) Fertilization occurring when the sperm fuses with the ovum in the fallopian tube to form a zygote, which undergoes cell division over several days to become a morula and then a blastocyst.
2) The blastocyst implants in the uterine wall and the trophoblast develops to form the placenta, while the inner cell mass forms the embryo and its structures.
3) It outlines the major developmental milestones from weeks 3-31, including organ formation, growth of limbs and senses, and increasing activity of the fetus.
Recommended
Human Reproduction- Fertilization and Parthenogenesis- Class 12
Link https://bichep.com/ppt-biology-ncert-based-for-class-11-and-12/
Fertilization is the fusion of haploid gametes, egg and sperm, to form the diploid zygote. Note though there can be subtle differences in the fertilization process which occurs naturally within the body or through reproductive technologies outside the body, the overall product in both cases is a diplod zygote.
Parthenogenesis is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization. In animals, parthenogenesis means development of an embryo from an unfertilized egg cell. In plants parthenogenesis is a component process of apomixis.
Fertilization
Fertilization is the union of an ovum with sperm. It can occur internally or externally. Depending on where development occurs, animals are grouped as oviparous (egg-laying), ovo-viviparous (internal fertilization but external development nourished by yolk), or viviparous (internal fertilization and development nourished by placenta). During fertilization, sperm penetrate the structures surrounding the ovum through the acrosome reaction. Once inside, the sperm fuses with the egg cytoplasm and triggers the formation of a fertilization membrane. The ovum then undergoes its second meiotic division, forming a haploid ovum and polar bodies. The sperm and ovum
Rb3 - Fertilization and Dev't
1. Fertilization occurs through the acrosomal reaction and fusion of the egg and sperm membranes, allowing entry of a single sperm.
2. This triggers the fast block to polyspermy within 1/10th of a second and the cortical reaction, which changes the egg cytoplasm and hardens membranes to prevent multiple fertilization.
3. Pregnancy is divided into three trimesters. The first trimester involves rapid development and differentiation of the embryo. The placenta forms and the embryo implants in the uterine wall.
Human fertilization
Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the uterine tube. The result of this union is the production of a zygote cell, or fertilized egg, initiating prenatal development. Scientists discovered the dynamics of human fertilization in the nineteenth century.[1]
The process of fertilization involves a sperm fusing with an ovum. The most common sequence begins with ejaculation during copulation, follows with ovulation, and finishes with fertilization. Various exceptions to this sequence are possible, including artificial insemination, In vitro fertilization, external ejaculation without copulation, or copulation shortly after ovulation.[2][3][4]Upon encountering the secondary oocyte, the acrosome of the sperm produces enzymes which allow it to burrow through the outer jelly coat of the egg. The sperm plasma then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and the egg travels down the Fallopian tube to reach the uterus.
Ovulation is the release of egg from the ovaries. In humans, this event occurs when the de Graaf's follicles rupture and release the secondary oocyte ovarian cells.[1] After ovulation, during the luteal phase, the egg will be available to be fertilized by sperm. In addition, the uterine lining (endometrium) is thickened to be able to receive a fertilized egg. If no conception occurs, the uterine lining as well as blood will be shed during menstruation.[2]
Human reproduction is any form of sexual reproduction resulting in human fertilization, typically involving sexual intercourse between a man and a woman. During sexual intercourse
Animal fertilization
Fertilization in animals involves the fusion of an egg and sperm to form a zygote and initiate embryo development. It can occur internally, within the female's body, or externally in aquatic environments. There are three key steps to ensure species-specific fertilization: chemotaxis, where sperm are attracted to the egg via chemicals; the acrosome reaction, where the sperm undergoes changes to penetrate the egg; and sperm-egg adhesion, where attachments form between the gametes. Internal fertilization protects developing embryos and results in higher offspring survival for land animals.
Fertilization
1. Capacitation is the process by which sperm gain the ability to fertilize an egg after leaving the male reproductive tract. It involves changes to the sperm membrane and motility that occur as sperm travel through the female reproductive tract.
2. For fertilization to occur, sperm must navigate barriers like cervical mucus, penetrate the zona pellucida surrounding the egg, and fuse with the egg membrane. Binding of sperm to zona pellucida protein ZP3 triggers the acrosome reaction which releases enzymes to penetrate the zona.
3. Fusion of sperm with the egg membrane activates the egg through release of calcium ions and cortical granules, allowing the male and female pronu
Fertilisation in human Being
Gametogenesis is the formation of sperm and eggs, involving spermatogenesis and oogenesis. This produces haploid gametes. The sperm consists of a head, middle piece, and tail, containing structures that aid fertilization. The mature egg is spherical, surrounded by membranes in the ovary. At puberty, sex hormone production increases, triggering physical changes earlier in females than males. The monthly menstrual cycle in females involves four phases and is controlled by hormones, beginning at menarche and ending at menopause. Fertilization, cleavage, blastocyst formation, implantation, and placenta formation occur for successful pregnancy and birth.
Obg ppt
The document summarizes the key stages of fertilization and embryonic development in humans. It describes:
1) Fertilization occurring when the sperm fuses with the ovum in the fallopian tube to form a zygote, which undergoes cell division over several days to become a morula and then a blastocyst.
2) The blastocyst implants in the uterine wall and the trophoblast develops to form the placenta, while the inner cell mass forms the embryo and its structures.
3) It outlines the major developmental milestones from weeks 3-31, including organ formation, growth of limbs and senses, and increasing activity of the fetus.
Fertilization
This document discusses three topics related to fertilization: in vitro pollen germination, pollen viability testing, and double fertilization. It explains that pollen can be germinated artificially and the rate depends on medium concentration and cultivar. Pollen viability is measured by staining anthers with dye and counting viable pollen under a microscope. Double fertilization uniquely occurs in flowering plants, where two sperm fuse with nuclei in the ovule - one forms the zygote and the other forms endosperm tissue to nourish the developing seed.
Gamete transport and fertilization
Complete presentation about gamete transport in male and female animal reproductive tract and fertilization
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The document outlines the molecular events that occur during fertilization. It discusses three stages of fertilization: sperm preparation, sperm-egg recognition and binding, and sperm-egg fusion. A key event is the increase in calcium levels in the egg cytoplasm, which prevents additional sperm from entering and signals the completion of meiosis. The fused egg and sperm each contribute a pronucleus, which then replicate their DNA and join during the first mitotic division to form a zygote with a combined genome. Maternal genes play an important role in early embryonic development by regulating processes like meiosis and the transition to embryonic gene expression.
Fertilization
This presentation covers fact about fertilization events across plants and animal kingdom. This is pdf file, please email (at mahlaranjeet@gmail.com) for ppts
fertilization
The document discusses the process of fertilization in several species. It describes 5 steps for recognition and fusion of egg and sperm cells, including chemoattraction, release of acrosomal enzymes, binding to extracellular envelopes, passage through envelopes, and fusion of nuclei. It also discusses the acrosome reaction, prevention of polyspermy through changes in electric potential and cortical granule reaction, and activation of the egg through calcium signaling and increased metabolism. Finally, it summarizes the process of sperm capacitation required for fertilization competence.
Fertilization
Fertilization involves the fusion of an egg and sperm, combining their genetic material. This process activates the egg and initiates embryonic development. Key events include chemoattraction of sperm to the egg, binding and fusion of gametes, and prevention of polyspermy. Fusion results in the formation of a single cell with a combined genome from both parent cells. This triggers metabolic changes in the egg and causes its nuclei to fuse, forming a zygote capable of initiating development of a new organism.
Fertilization
This document discusses the process of fertilization in three parts:
1) It describes the steps of fertilization, including capacitation, contact, acrosome reaction, fusion of sperm and egg, and activation of the ovum.
2) It explains the differences between external fertilization, which occurs outside the body, and internal fertilization, which occurs inside the body.
3) It outlines the process after sperm enters the female reproductive tract, including the pronuclei fusing to form a zygote within 20 hours of fertilization.
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Oogensis
Oogenesis is the process where an ovum is produced in the ovaries of females. It begins with oogonia that undergo mitosis and become primary oocytes. The primary oocytes then go through two phases of meiotic division to become either secondary oocytes or polar bodies. The secondary oocyte may be fertilized by sperm to form a zygote. This process is regulated by hormones like FSH and LH which stimulate the growth and maturation of ovarian follicles.
Fertilization, Types of fertilization, step of fertilization process, Chemist...
This document summarizes the process of fertilization in humans. It begins by defining fertilization as the fusion of male and female gametes that results in the formation of a zygote. It then describes the steps of fertilization, including the acrosomal reaction where sperm lysins allow fusion of sperm and egg membranes, cortical reaction where the egg is hardened to prevent polyspermy, sperm entry and karyogamy where the pronuclei fuse. The zygote then undergoes cell division as it travels through the fallopian tube and implants in the uterus, marking the beginning of pregnancy. Key roles of calcium ions and theories of egg activation are also summarized.
Fertilization
Fertilization occurs when a sperm enters an ovum and their nuclei fuse to form a zygote with 46 chromosomes. This takes place in the fallopian tubes. The zygote then undergoes cell division, forming a morula, blastula, and gastrula. During the gastrula stage, the three germ layers form - ectoderm, mesoderm, and endoderm - which will give rise to the embryo's organs and tissues. The blastocyst then implants in the uterus, where the placenta develops to support fetal development over the following months.
Oogenesis
Oogenesis is the process by which primary oocytes develop into mature eggs. It begins during fetal development with the creation of oogonia, which undergo mitosis to form millions of primary oocytes. After birth, the primary oocytes enter a growth phase where they increase in size within follicles in the ovaries. At puberty, some follicles undergo maturation where the oocytes resume and complete meiosis, resulting in the formation of secondary oocytes and polar bodies. Upon ovulation, a mature follicle ruptures and releases a secondary oocyte into the fallopian tube.
Gametogenesis
Gametogenesis is the process by which gametes, or sex cells, are produced through two types: spermatogenesis where sperm are produced in the testes through meiosis and oogenesis where eggs are produced in the ovaries through meiosis, typically resulting in one functional egg cell and three nonfunctional polar body cells. Fertilization occurs when a sperm enters and passes through the female reproductive system to meet and fertilize an egg in the oviduct, forming a zygote which becomes an embryo after the first cell cleavage.
Spermatogenesis vs. oogenesis_-_germinario
Spermatogenesis and oogenesis both use meiosis to produce gametes. Spermatogenesis occurs in the testes and results in 4 haploid sperm from one diploid germ cell. Oogenesis occurs in the ovaries and results in one haploid egg and 3 polar bodies from the original diploid oocyte. Both processes arrest at different stages of meiosis until fertilization.
Fertilization notes
Fertilization of Human gametes.
For Scientific Free Lectures, Visit - http://bit.ly/VisitZofirAcademy
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The document discusses sex cell differentiation and gamete formation in humans and other animals. It covers the processes of oogenesis and spermatogenesis, including the migration of primordial germ cells and proliferation of eggs and sperm. It also describes fertilization, including the structures and stages of egg and sperm cells, their fusion during conception, and the early cleavage and differentiation stages of embryonic development.
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Gametogenesis is the development of gametes (sperm and eggs) through meiosis. Key genetic processes in gametogenesis include reducing chromosome number and independent chromosome segregation through meiotic cell division. While sperm and egg development differ morphologically, the underlying genetic processes are the same. Fertilization allows for the transfer of DNA from parents to offspring, promoting species continuity.
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Spermatogenesis and oogenesis are the processes by which gametes (sperm and eggs) are produced in the male and female reproductive systems. Spermatogenesis occurs in the seminiferous tubules of the testes and involves the production of sperm through meiosis and differentiation. Oogenesis begins during embryonic development with the formation of oocytes, and involves meiosis, follicular growth, and ovulation of a secondary oocyte from the ovaries each menstrual cycle. Fertilization occurs when a sperm fuses with an egg in the fallopian tubes, forming a zygote.
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This document discusses gametogenesis and fertilization in humans. It describes the processes of spermatogenesis in males, where spermatogonia undergo meiosis to form spermatids over 64 days, and oogenesis in females. Fertilization occurs when a sperm and egg unite in the uterine tubes, restoring the diploid chromosome number and determining the embryo's sex. The result can be a single embryo, or monozygotic or dizygotic twins in rare cases of splitting or separate eggs being fertilized.
Spermatogenesis and oogenesis
There are three phases of spermatogenesis: spermatocytogenesis, meiosis, and spermiogenesis. Spermatocytogenesis involves the mitotic division of spermatogonia. Meiosis results in haploid cells called spermatids from diploid spermatogonia. During spermiogenesis, spermatids undergo morphological changes to form spermatozoa. Sertoli cells support this process through signaling molecules, forming a blood-testis barrier, and phagocytosing residual bodies. Testosterone and FSH regulate spermatogenesis through effects on Sertoli and germ cells.
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The document discusses the female menstrual cycle. It describes how the egg matures and is released from the ovary monthly. If the egg is not fertilized by a sperm, the uterine lining breaks down and is discharged through menstruation. Menstruation typically occurs every 28 days and lasts 4-5 days. As long as a female menstruates regularly, she is able to become pregnant.
1st science 6 the fertilized egg
The document discusses the development of a fertilized egg from a zygote to an embryo and eventually a fetus. It explains that a zygote is formed when a sperm cell fertilizes an egg cell. The zygote then undergoes cell division as it moves through the fallopian tube. It is eventually implanted in the uterus where it develops into a many-celled embryo. By around 9 weeks, most organs have formed and it is called a fetus. The fetus remains in the uterus for 9 months, nourished by the placenta through the umbilical cord, until birth.
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This document discusses three topics related to fertilization: in vitro pollen germination, pollen viability testing, and double fertilization. It explains that pollen can be germinated artificially and the rate depends on medium concentration and cultivar. Pollen viability is measured by staining anthers with dye and counting viable pollen under a microscope. Double fertilization uniquely occurs in flowering plants, where two sperm fuse with nuclei in the ovule - one forms the zygote and the other forms endosperm tissue to nourish the developing seed.
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The document outlines the molecular events that occur during fertilization. It discusses three stages of fertilization: sperm preparation, sperm-egg recognition and binding, and sperm-egg fusion. A key event is the increase in calcium levels in the egg cytoplasm, which prevents additional sperm from entering and signals the completion of meiosis. The fused egg and sperm each contribute a pronucleus, which then replicate their DNA and join during the first mitotic division to form a zygote with a combined genome. Maternal genes play an important role in early embryonic development by regulating processes like meiosis and the transition to embryonic gene expression.
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This presentation covers fact about fertilization events across plants and animal kingdom. This is pdf file, please email (at mahlaranjeet@gmail.com) for ppts
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The document discusses the process of fertilization in several species. It describes 5 steps for recognition and fusion of egg and sperm cells, including chemoattraction, release of acrosomal enzymes, binding to extracellular envelopes, passage through envelopes, and fusion of nuclei. It also discusses the acrosome reaction, prevention of polyspermy through changes in electric potential and cortical granule reaction, and activation of the egg through calcium signaling and increased metabolism. Finally, it summarizes the process of sperm capacitation required for fertilization competence.
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Fertilization involves the fusion of an egg and sperm, combining their genetic material. This process activates the egg and initiates embryonic development. Key events include chemoattraction of sperm to the egg, binding and fusion of gametes, and prevention of polyspermy. Fusion results in the formation of a single cell with a combined genome from both parent cells. This triggers metabolic changes in the egg and causes its nuclei to fuse, forming a zygote capable of initiating development of a new organism.
Fertilization
This document discusses the process of fertilization in three parts:
1) It describes the steps of fertilization, including capacitation, contact, acrosome reaction, fusion of sperm and egg, and activation of the ovum.
2) It explains the differences between external fertilization, which occurs outside the body, and internal fertilization, which occurs inside the body.
3) It outlines the process after sperm enters the female reproductive tract, including the pronuclei fusing to form a zygote within 20 hours of fertilization.
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This presentation is an introduction to the principles of spermatogenesis of domestic animals by Dr. John J. Parrish of the University of Wisconsin-Madison (Animal Science Department).
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Oogenesis is the process where an ovum is produced in the ovaries of females. It begins with oogonia that undergo mitosis and become primary oocytes. The primary oocytes then go through two phases of meiotic division to become either secondary oocytes or polar bodies. The secondary oocyte may be fertilized by sperm to form a zygote. This process is regulated by hormones like FSH and LH which stimulate the growth and maturation of ovarian follicles.
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This document summarizes the process of fertilization in humans. It begins by defining fertilization as the fusion of male and female gametes that results in the formation of a zygote. It then describes the steps of fertilization, including the acrosomal reaction where sperm lysins allow fusion of sperm and egg membranes, cortical reaction where the egg is hardened to prevent polyspermy, sperm entry and karyogamy where the pronuclei fuse. The zygote then undergoes cell division as it travels through the fallopian tube and implants in the uterus, marking the beginning of pregnancy. Key roles of calcium ions and theories of egg activation are also summarized.
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Fertilization occurs when a sperm enters an ovum and their nuclei fuse to form a zygote with 46 chromosomes. This takes place in the fallopian tubes. The zygote then undergoes cell division, forming a morula, blastula, and gastrula. During the gastrula stage, the three germ layers form - ectoderm, mesoderm, and endoderm - which will give rise to the embryo's organs and tissues. The blastocyst then implants in the uterus, where the placenta develops to support fetal development over the following months.
Oogenesis
Oogenesis is the process by which primary oocytes develop into mature eggs. It begins during fetal development with the creation of oogonia, which undergo mitosis to form millions of primary oocytes. After birth, the primary oocytes enter a growth phase where they increase in size within follicles in the ovaries. At puberty, some follicles undergo maturation where the oocytes resume and complete meiosis, resulting in the formation of secondary oocytes and polar bodies. Upon ovulation, a mature follicle ruptures and releases a secondary oocyte into the fallopian tube.
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Gametogenesis is the process by which gametes, or sex cells, are produced through two types: spermatogenesis where sperm are produced in the testes through meiosis and oogenesis where eggs are produced in the ovaries through meiosis, typically resulting in one functional egg cell and three nonfunctional polar body cells. Fertilization occurs when a sperm enters and passes through the female reproductive system to meet and fertilize an egg in the oviduct, forming a zygote which becomes an embryo after the first cell cleavage.
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Spermatogenesis and oogenesis both use meiosis to produce gametes. Spermatogenesis occurs in the testes and results in 4 haploid sperm from one diploid germ cell. Oogenesis occurs in the ovaries and results in one haploid egg and 3 polar bodies from the original diploid oocyte. Both processes arrest at different stages of meiosis until fertilization.
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Fertilization of Human gametes.
For Scientific Free Lectures, Visit - http://bit.ly/VisitZofirAcademy
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The document discusses sex cell differentiation and gamete formation in humans and other animals. It covers the processes of oogenesis and spermatogenesis, including the migration of primordial germ cells and proliferation of eggs and sperm. It also describes fertilization, including the structures and stages of egg and sperm cells, their fusion during conception, and the early cleavage and differentiation stages of embryonic development.
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This document discusses gametogenesis and fertilization in humans. It describes the processes of spermatogenesis in males, where spermatogonia undergo meiosis to form spermatids over 64 days, and oogenesis in females. Fertilization occurs when a sperm and egg unite in the uterine tubes, restoring the diploid chromosome number and determining the embryo's sex. The result can be a single embryo, or monozygotic or dizygotic twins in rare cases of splitting or separate eggs being fertilized.
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This document provides guidance for doctors on breaking bad news to patients about failed in vitro fertilization (IVF) cycles. It emphasizes being empathetic, honest, and speaking with compassion when informing patients. It also stresses analyzing what went wrong with the previous cycle, discussing potential protocol changes for the next attempt, and managing patient expectations by preparing them for possible failure. The document encourages doctors to provide photos of embryos, support groups, and counseling to help patients cope with the difficult news.
Reproduction review lesson
Reproduction ensures the continuity of species. Sexual reproduction involves two parents and results in offspring that are genetically similar. It occurs through the fusion of male and female gametes. In plants, sexual reproduction involves flowers that have male anthers producing pollen and female stigma receiving pollen. Pollination is the transfer of pollen grains leading to fertilization where the sperm fuses with the egg. In humans, sexual reproduction involves the male reproductive system producing sperm and the female reproductive system containing ovaries and uterus. Contraceptive methods like condoms, IUDs, birth control pills and sterilization procedures prevent fertilization.
Sexual reproduction in Human methods and techniques
The placenta functions to exchange nutrients and waste between the mother and fetus. It attaches to the uterine wall and connects to the fetus via the umbilical cord. The placenta allows oxygen, glucose, amino acids and salts to pass from the mother's bloodstream to the fetus's bloodstream, while carbon dioxide and urea pass in the opposite direction, into the mother's bloodstream. This exchange occurs across the thin walls of the blood vessels without the bloodstreams directly mixing. The placenta regulates this exchange and protects the fetus from high blood pressure.
In vitro fertilization (ivf)
This document provides an overview of in vitro fertilization (IVF). It discusses that IVF involves fertilizing an egg with sperm outside of the body in a laboratory dish. The first successful IVF birth was in 1978 in England. The document outlines the basic IVF process which includes hormonal treatment of the female, egg retrieval, fertilization and embryo culture, and embryo transfer. It also discusses the history of IVF, indications for IVF including tubal disease and male factor infertility, factors that affect IVF success rates like maternal age, and potential side effects and risks of IVF treatment.
Ch05 systemsreproduction
Here are three sentences using the words provided:
(a) The testes produce sperm which are stored in the scrotum.
(b) Ova, or eggs, develop within follicles in the ovaries.
(c) Sperm travel from the testes through the vas deferens, while ova move from the ovaries through the fallopian tubes.
Stemcells biology CIRM California Gov 2020
What is stem cell research? Understand more about development, aging ... Human embryonic stem cell research is a decade old.
ASSISTED REPRODUCTIVE TECHNOLOGY
Assisted reproductive technology (ART) is a medical procedure used to address infertility issues.It involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), cryopreservation of gametes or embryos, and/or the use of fertility medication.
Reprod in humans
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.
Reprodinhumans 170322174812
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.
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AP bio ch. 46 & 47 reproduction and development for 4 /2 /18
AP bio ch. 46 & 47 reproduction and development for 4 /2 /18
Breaking Bad News (BBN) of IVF Failure simple formulae used by us Lifecare...
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Sexual reproduction in Human methods and techniques
Sexual reproduction in Human methods and techniques
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3rd qtr 6 suffixes
The document discusses suffixes and their meanings. It provides examples of words with suffixes -ry, -ly, -ic, -ous, -ness and -ment added to root words. These suffixes change the root words' meanings or how they are used. The document also has exercises for students to practice identifying suffixes and their meanings in sentences.
3rd qtr 5 predicting possible outcomes
This document contains a story about a peddler who sells caps of different colors that he carries on his head. As he takes a nap under a tree, monkeys steal all of the caps. When the peddler wakes up without his caps, he angrily demands the monkeys return them. Finally, the peddler removes his own cap, causing the monkeys to return all the caps.
3rd Qtr 3 as+adj+as
The document provides examples and exercises about using comparative adjectives in sentences with the structure "as ADJECTIVE as". It includes:
1) Examples of sentences comparing the whiteness of pearls to milk and their smoothness to silk.
2) Examples asking students to compare the redness of rubies to glowing coals and the height of Mrs. Barrera to Cornelia.
3) Exercises for students to complete sentences comparing attributes with phrases like "as sweet as" and "as helpful as".
3rd Qtr 2 degree of comparison of adjectives
Here are the comparative and superlative degrees of the given adjectives:
Positive Comparative Superlative
1. good better best
2. bad worse worst
3. much more most
4. many more most
5. little less least
3rd Qtr 1 identifying verbs and adjectives
1. The passage describes a dialogue between Justin and his father about the early Filipinos.
2. Justin initially thought the early Filipinos were lazy because they lived in caves instead of houses, but his father corrected him, saying they had a simple yet hard way of life.
3. Justin's father explained that the early Filipinos hunted wild animals with bows and arrows or spears for food, and sometimes ate raw meat, showing their life was difficult compared to modern times.
2nd qtr 16 writing rhymes
1. The document provides instructions and examples for writing rhymes and jingles.
2. Students are asked to analyze a poem, discuss sensory elements, and write their own short rhymes.
3. The document includes activities where students practice reciting rhymes, rewriting rhyming words, and completing lines of rhymes.
2nd qtr 15 writing a two point outline
- The document provides information about the scanning technique used in reading. Scanning involves quickly looking through a text to find specific information rather than reading every word.
- Tips for effective scanning include not reading every word, using headings and keywords, and having questions prepared in advance.
- An example is provided of using scanning skills to answer questions about types of rocks by looking for information in a passage about rocks.
2nd qtr 14 using tag questions with do
This document discusses the use of tag questions with do/does/did verbs in English sentences. It provides examples of sentences using tag questions and exercises for students to practice identifying, writing, and answering tag questions. The exercises analyze sample sentences containing tag questions to identify the verb used, tense, condition expressed by the stem and tag, and parts of a tag question. Students are also asked to supply missing tags in sentences and identify the correct tag for given sentences.
2nd qtr 13 using two word verb in sentences
This document discusses two-word verbs in English. It provides examples of common two-word verbs like "put on", "pull out", "pick out", and "look up". It explains that some verbs need to be combined with other words to fully express their meaning. Exercises are included to identify two-word verbs in sentences and paragraphs and determine their meanings. Students are asked to use example two-word verbs in their own original sentences.
2nd qtr 12 using the future tense of the verb with
The document is a collection of sentences from an English lesson on using the future tense. It includes examples of using "going to" to indicate future tense, such as a comic strip where a caterpillar says he's "going to turn into a butterfly". It also discusses how the future tense shows an action that will happen, and how it is formed with "will" or "shall" plus the simple verb form, or "am/is/are going to" plus the verb. Students are given exercises to practice using future tense, such as providing future tense verbs for time expressions like "tomorrow morning".
2nd qtr 11 use the expression used to with the simple
1) The document discusses the use of the expression "used to" + verb to talk about habitual past actions.
2) It provides examples of sentences using "used to" like "Judy Anne used to wear her sister's dresses" and explains that these actions are things done in the past but not anymore.
3) The expression "used to" + verb is used to talk about things that happened regularly or often in the past but not in the present.
2nd qtr 10 using the simple present for general truth
The US National Cancer Institute sponsors a $20.5 million, 5-year program researching foods that prevent cancer. Garlic tops the list of foods studied, which also includes citrus fruits, linseed, licorice root, and parsley. Research shows raw garlic contains 17 types of natural sugars and 19 minerals that promote healthy digestion and regulate bodily fluids and cholesterol levels. Consuming a few grams of garlic daily provides health benefits.
2nd qtr 9 making a two point outline
The document provides guidance on making a two-point outline, including key elements to include. It discusses that the main idea should be at the center of the outline with related words, ideas and concepts as supporting details. It also notes that Roman numerals should represent the main topics, capital letters the subheadings, and Arabic numerals the detail headings. Proper indentation and punctuation are also emphasized.
2nd qtr 8 identifying the key sentence in a paragraph
Here are the key sentences and supporting details for the paragraphs:
1. The key sentence is: This forward and backward moving wave is the tide.
The supporting details are: The moon's gravitational pull lifts the sea like a wave. The water rises very slowly because it is a very long moving wave. The wave's motion reaches to the sea and to the shoreline.
2. The key sentence is: The moon's pull accounts for both high tides and low tides.
The supporting details are: The moon pulls hardest on the part of Earth nearest it, lifting the water on that part of Earth. The water bulges out toward the moon. Where the bulge is greatest, it is known as high
2nd qtr 7 giving title to related ideas
This document discusses how to organize related ideas under an appropriate heading. It begins by defining a heading as a general idea that represents a set of related words. Students are then guided in an activity where they must group words and assign headings. The document stresses that giving proper headings to related ideas helps organize information in a meaningful way.
2nd qtr 6 asking and answering questions using rejoinders
This document provides instruction on how to answer questions using rejoinders in English. It begins by giving examples of questions answered with rejoinders. It then explains that a rejoinder is a phrase added to a "yes" or "no" answer using a personal pronoun. The document teaches students to determine the correct personal pronoun to use in the rejoinder based on the subject of the question. It provides examples and practice answering questions with positive and negative rejoinders.
2nd qtr 5 sequencing events in a story
This document contains an excerpt from a student's diary detailing events during her school's foundation week celebration. It then provides comprehension questions about sequencing events in stories and diaries. The next sections provide examples and activities to practice arranging passages in chronological order by identifying clue words and transitional phrases between events.
2nd qtr 4 prefixes super and ex
The document discusses prefixes "super" and "ex-", providing examples of words that use each prefix like supermarket, supernatural, and supercook. It defines "super-" as meaning big or excellent and "ex-" as meaning former. Several examples are given of sentences using words with these prefixes, such as "That supermarket is the biggest in the world" and "Alfredo Lim is the ex-mayor of Manila". The document appears to be part of an English lesson, covering prefixes, examples, oral and written practice, evaluation, and assignment.
2nd qtr 3 reflexive pronouns
The document discusses reflexive pronouns, which are pronouns formed by combining a personal pronoun with "self" or "selves." It provides examples of sentences using reflexive pronouns like "himself," "yourself," and "themselves." The document also examines the components of reflexive pronouns, their antecedents, and the part of the sentence they are used in. Various exercises are included to reinforce the use of reflexive pronouns.
2nd qtr 2 relative pronouns
This document discusses the use of relative pronouns in sentences. It provides examples of combining two sentences into one using relative pronouns like who, whom, whose, which, and that. It also defines relative pronouns and gives examples of their use referring to people, animals, things, and ideas. Students are given practice exercises to combine sentences using relative pronouns and the document provides the expected answers.
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1st science 4 fertilization
- 1. Explains the process of fertilization in humans Science V
- 2. Review • What do ovaries produce?.. • What hormone do they produce? • What do the testes produce? • What hormones do they produce?
- 3. Motivation
- 4. Presentation Watching of video clip: Fertilization
- 5. Concept Formation What is fertilization?
- 6. Remember • The union of an egg and a sperm cell is called fertilization.
- 7. Concept Formation • Where does fertilization occur?
- 8. Remember • Fertilization occurs in one of the fallopian tubes as the egg moves toward the uterus.
- 9. Concept Formation • What fertilizes the egg?
- 10. Remember • The moving sperm swims up through the uterus and enter the fallopian tube.
- 11. Concept Formation • What is the fertilized egg called?
- 12. Remember • The fertilized egg is called zygote.
- 13. Application •How many egg cells mature every month? •How many sperm cells fertilized the egg cell?
- 14. Evaluation Answer the following briefly: 1. How many sperm cells does an egg cell normally need in order to become fertilized? 2. When does fertilization occur? 3. Where does fertilization occur? 4. Define fertilization.
- 15. Assignment Why is fertilization in human important?