- Gametogenesis is the process of forming male and female gametes called spermatogenesis and oogenesis. Spermatogenesis occurs in the testes and forms sperm from spermatogonia. Oogenesis occurs in the ovaries and forms eggs from oogonia.
- The menstrual cycle involves the monthly development of an egg, its release from the ovaries (ovulation), and preparation for potential fertilization by the lining of the uterus. If fertilization does not occur, the uterine lining sheds and menstruation begins.
- Fertilization is the fusion of an egg and sperm, usually occurring in the fallopian tubes. The sperm enters the egg, and their nuclei fuse to form a
permatogenesis and oogenesis are the processes of formation of male and female gametes. Spermatogenesis leads to the formation of sperms, whereas oogenesis helps in the formation of ova. The fertilization of sperm and ova leads to the formation of a zygote which further develops into an embryo
permatogenesis and oogenesis are the processes of formation of male and female gametes. Spermatogenesis leads to the formation of sperms, whereas oogenesis helps in the formation of ova. The fertilization of sperm and ova leads to the formation of a zygote which further develops into an embryo
This presentation will cover human reproduction system in detail.
It covers the male as well as the female reproductive system.
Later the slides includes information on menstrual cycle and their phases .
The slides also cover the vital hormones of the reproductive system along with their functions.
# I hope this slide is helpful to you all readers
Female reproductive system
By Prof. Dr. R. R. Deshpande
• This PPT has following Imp Contents
• Description of Organs of Female Reproductive System –Vagina,Cervix ,Uterus ,Fallopian Tubes ,Ovary ,
• Menstruation –Slide 54 to 66
• Visit – www.ayurvedicfriend.com
Phone – 922 68 10 630
The reproductive system or genital system is a system of organs within an organism which work together for the purpose of reproduction.
The reproductive events in human includes formation of gametes (gametogenesis) i.e sperms in males and ovum in females leading to the formation of zygote.
Reproductive system and its Classification Vipin Shukla
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Human Reproductive system, Classificatio of Human reprodutive system, Parts and Functions male reproductive organs, Female Reproductive system, Parts and functions of female reproductive system,The Menstrual cycle, Assisted Reproductive Technology, Invitrofertilization, and its techniques, Most commonly used techniques, Les commonly used techniques, Transvaginal Oocytes Retrieval, Intra Cytoplasmic Injecection, (ICSI), Procedure of ICSI, Who are the patients required ICSI, Embryo Transfer, Zygote Intra Fallopain Transfer, Gametes Intrafallopian Transfer, Gift Technique, Surrogacy, Types of Surrogacy, Steps Involved in Surrogacy, Ither techniques,
he reproductive system is a collection of internal and external organs — in both males and females — that work together for the purpose of procreating, according to the Cleveland Clinic. Due to its vital role in the survival of the species, many scientists argue that the reproductive system is among the most important systems in the entire body.
Human reproduction - A detailed study ( medical information)martinshaji
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Human reproduction is any form of sexual reproduction resulting in human fertilization. It typically involves sexual intercourse between a man and a woman. During sexual intercourse, the interaction between the male and female reproductive systems results in fertilization of the woman's ovum by the man's sperm.
By the end of this section, you will be able to:
Describe human male and female reproductive anatomies
Describe spermatogenesis and oogenesis and discuss their differences and similarities
Describe the role of hormones in human reproduction
Describe the roles of male and female reproductive hormone
The reproductive events in humans include formation of gametes (gametogenesis), i.e., sperms in males and ovum in females, transfer of sperms into the female genital tract (insemination) and fusion of male and female gametes (fertilisation) leading to formation of zygote.
this is a long study on all aspects of human reproduction & most asked questions about human reproductive system ( medical information ).
please comment
thank u
The female reproductive system is made up of the internal and external sex organs that function in reproduction of new offspring. In humans, the female reproductive system is immature at birth and develops to maturity at puberty to be able to produce gametes, and to carry a fetes to full term.
This presentation will cover human reproduction system in detail.
It covers the male as well as the female reproductive system.
Later the slides includes information on menstrual cycle and their phases .
The slides also cover the vital hormones of the reproductive system along with their functions.
# I hope this slide is helpful to you all readers
Female reproductive system
By Prof. Dr. R. R. Deshpande
• This PPT has following Imp Contents
• Description of Organs of Female Reproductive System –Vagina,Cervix ,Uterus ,Fallopian Tubes ,Ovary ,
• Menstruation –Slide 54 to 66
• Visit – www.ayurvedicfriend.com
Phone – 922 68 10 630
The reproductive system or genital system is a system of organs within an organism which work together for the purpose of reproduction.
The reproductive events in human includes formation of gametes (gametogenesis) i.e sperms in males and ovum in females leading to the formation of zygote.
Reproductive system and its Classification Vipin Shukla
Â
Human Reproductive system, Classificatio of Human reprodutive system, Parts and Functions male reproductive organs, Female Reproductive system, Parts and functions of female reproductive system,The Menstrual cycle, Assisted Reproductive Technology, Invitrofertilization, and its techniques, Most commonly used techniques, Les commonly used techniques, Transvaginal Oocytes Retrieval, Intra Cytoplasmic Injecection, (ICSI), Procedure of ICSI, Who are the patients required ICSI, Embryo Transfer, Zygote Intra Fallopain Transfer, Gametes Intrafallopian Transfer, Gift Technique, Surrogacy, Types of Surrogacy, Steps Involved in Surrogacy, Ither techniques,
he reproductive system is a collection of internal and external organs — in both males and females — that work together for the purpose of procreating, according to the Cleveland Clinic. Due to its vital role in the survival of the species, many scientists argue that the reproductive system is among the most important systems in the entire body.
Human reproduction - A detailed study ( medical information)martinshaji
Â
Human reproduction is any form of sexual reproduction resulting in human fertilization. It typically involves sexual intercourse between a man and a woman. During sexual intercourse, the interaction between the male and female reproductive systems results in fertilization of the woman's ovum by the man's sperm.
By the end of this section, you will be able to:
Describe human male and female reproductive anatomies
Describe spermatogenesis and oogenesis and discuss their differences and similarities
Describe the role of hormones in human reproduction
Describe the roles of male and female reproductive hormone
The reproductive events in humans include formation of gametes (gametogenesis), i.e., sperms in males and ovum in females, transfer of sperms into the female genital tract (insemination) and fusion of male and female gametes (fertilisation) leading to formation of zygote.
this is a long study on all aspects of human reproduction & most asked questions about human reproductive system ( medical information ).
please comment
thank u
The female reproductive system is made up of the internal and external sex organs that function in reproduction of new offspring. In humans, the female reproductive system is immature at birth and develops to maturity at puberty to be able to produce gametes, and to carry a fetes to full term.
The physiological processes that regulate parturition and the onset of labor continue to be defined. It is clear, however, that labor onset represents the culmination of a series of biochemical changes in the uterus and cervix. These result from endocrine and paracrine signals emanating from both mother and fetus.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
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This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
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Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
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Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Model Attribute Check Company Auto PropertyCeline George
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In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
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Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
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Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
3. human reproduction gametogenesis and menstrual cycle
1. HUMAN
REPRODUCTIONG A M E TO G E N E S I S , M E N S T R U A L C Y C L E A N D
F E R T I L I Z AT I O N
BY
I N D E R J I T S I N G H
P G T B I O L O G Y
K V S E C TO R 3 1 C H A N D I G A R H
2. • Gametogenesis: the process of formation of male and female gamete.
• Formation of male gamete in human is known as spermatogenesis and formation of
female gamete is known as oogenesis.
• # Spermatogenesis: -
• Formation of spermatozoa in the testis; the process starts at puberty.
• In testis, the immature male germ cells (spermatogonia) produce sperms by
spermatogenesis that begins at puberty.
• The spermatogonia (sing. spermatogonium) present on the inside wall of seminiferous
tubules multiply by mitotic division and increase in numbers.
• Each spermatogonium is diploid and contains 46 chromosomes.
3. • Some of the spermatogonia called primary spermatocytes periodically undergo meiosis.
• A primary spermatocyte completes the first meiotic division (reduction division) leading
to formation of two equal, haploid cells called secondary spermatocytes, which have only
23 chromosomes each.
• The secondary spermatocytes undergo the second meiotic division to produce four equal,
haploid spermatids.
• The spermatids are transformed into spermatozoa (sperms) by the process called
spermiogenesis.
• After spermiogenesis, sperm heads become embedded in the Sertoli cells, and are finally
released from the seminiferous tubules by the process called Spermiation.
4. Schematic representation of SpermatogenesisDiagrammatic sectional view of a seminiferous
tubule (enlarged)
Spermatogenesis:
-
8. • # Oogenesis: -
• Process of formation of female gametes or ova in ovary.
• Oogenesis is initiated during the embryonic development stage when a couple of
gamete mother cells (oogonia) are formed within each fetal ovary; no more oogonia are
formed and added after birth.
• These cells start division and enter into prophase-I of the meiotic division and get
temporarily arrested at that stage, called primary oocytes.
• Each primary oocyte then gets surrounded by a layer of granulosa cells and then called
the primary follicle.
• A large number of these follicles degenerate during the phase from birth to puberty.
9. • Therefore, at puberty only 60,000-80,000 primary follicles are left in each ovary.
• The primary follicles get surrounded by more layers of granulosa cells and a new theca
and called secondary follicles.
• The secondary follicle soon transforms into a tertiary follicle which is characterised by a
fluid filled cavity called antrum. The theca layer is organised into an inner theca interna
and an outer theca externa.
• the primary oocyte within the tertiary follicle grows in size and completes its first meiotic
division. It is an unequal division resulting in the formation of a large haploid secondary
oocyte and a tiny first polar body.
• The tertiary follicle further changes into the mature follicle or Graafian follicle.
10. • The secondary oocyte forms a new membrane called zona pellucida
surrounding it. The Graafian follicle now ruptures to release the secondary
oocyte (ovum) from the ovary by the process called ovulation.
• The secondary oocyte starts its second meiotic division but it is suspended
in metaphase II, until a sperms enters it.
Diagrammatic Section view of ovary
13. # MENSTRUAL CYCLE: -
• The reproductive cycle in the female primates (e.g. monkeys, apes and human beings) is
called menstrual cycle.
• The first menstruation begins at puberty and is called menarche.
• In human females, menstruation is repeated at an average interval of about 28/29 days,
and the cycle of events starting from one menstruation till the next one is called the
menstrual cycle.
• One ovum is released (ovulation) during the middle of each menstrual cycle. The major
events of the menstrual cycle are: -
• i) Menstrual Phase: -
• Cycle starts with this phase and menstrual flow (menstruation) lasts for 3-5 days.
15. • Results due to break down of endometrial lining of uterus and its blood vessels, along
with unfertilized ovum.
• ii) Follicular Phase/ Proliferative Phase: -
• the primary follicles in the ovary grow to become a fully mature Graafian follicle.
• simultaneously the endometrium of uterus regenerates through proliferation of its cells.
• These changes are due to an increased level of pituitary hormones, FSH and LH and
ovarian hormone, estrogen.
• FSH controls the follicular phase; it stimulates the growth of follicles and secretion of
estrogen by the growing follicles.
• Both LH and FSH attain a peak level in the middle of cycle (about 14th day).
16. • iii) Ovulatory Phase: -
• The peak level of LH (called LH surge) induces the rupture of the mature Graafian follicle
and thereby release of secondary oocytes (ovum); this process is called ovulation.
• iv) Luteal Phase/ Secretory Phase: -
• Ruptured follicle is transformed into corpus luteum.
• It secretes large quantities of progesterone’s.
• Endometrium thickens further and their glands secrete a fluid in the uterus.
• In the absence of the fertilization, corpus luteum degenerates and this causes
disintegration of the endometrium leading to menstruation.
• Ceasing of the menstrual cycle is known as menopause at the age of about 45-50 years.
18. • During copulation (coitus) semen is released by the penis into the vagina (insemination).
• The motile sperms swim rapidly, pass through the cervix, enter into the uterus and finally
reach the junction of the isthmus and ampulla (ampullary-isthmic junction) of the
fallopian tube.
• The ovum released by the ovary is also transported to the ampullary-isthmic junction
where fertilisation takes place.
• The process of fusion of a sperm with an ovum is called fertilisation.
• During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum
and induces changes in the membrane that block the entry of additional sperms.
• The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum
through the zona pellucida and the plasma membrane.
• This induces the completion of the meiotic division of the secondary oocyte. The second
meiotic division is also unequal and results in the formation of a second polar body and a
haploid ovum (ootid).
• Soon the haploid nucleus of the sperms and that of the ovum fuse together to form a
diploid zygote.