This PPT covers Anatomy and Physiology of Male Reproductive System. It includes anatomy of male reproductive organs, spermatogenesis and hormonal regulation of testis
This PPT covers Anatomy and Physiology of Male Reproductive System. It includes anatomy of male reproductive organs, spermatogenesis and hormonal regulation of testis
Differentiate the processes of oogenesis and spermatogenesis. Are th.pdfrushabhshah600
Differentiate the processes of oogenesis and spermatogenesis. Are there similarities between the
two processes? Differences? Consider the cells, their structures and functions.
Solution
Comparison between Spermatogenesis and Oogenesis
Characteristics
Spermatogenesis
Oogenesis
Definition
The process of formation of sperm cells is called spermatogenesis
Formation of ovum is called oogenesis
Primary organ
Testis (in males)
Ovary (in females)
The source cell/ structure that undergoes gametogenesis
Spermatogonium
Primordial follicle
Source cell is preserved
Yes, Spermatogonium is a stem cell.
No
Type of cell division
Meiosis
Meiosis
Onset of gametogenesis
At puberty. Both meiosis I and II in spermatogonium begin at onset of puberty.
During embryonic development.
Meiosis I begins in fetal ovary. Meiosis II completes after onset of puberty in reproductive
cycles.
Continuous or cyclic
Continuous. Millions of sperms are produced each day.
Cyclic. Only one mature ovum is produced per reproductive cycle (of 28 days).
Occurrence of gametogenesis in life
Begins at puberty
Continues throughout life
Begins at menarche
Ends at menopause
No. of functional gametes in one cycle
4
1
Polar cells (that degenerate later) produced
No
Yes, one polar cell in each of meiosis I and II.
In spite of major difference of these two processes, they both share a common path and fate- they
meiotic divisions that produce haploid gametes.
Characteristics
Spermatogenesis
Oogenesis
Definition
The process of formation of sperm cells is called spermatogenesis
Formation of ovum is called oogenesis
Primary organ
Testis (in males)
Ovary (in females)
The source cell/ structure that undergoes gametogenesis
Spermatogonium
Primordial follicle
Source cell is preserved
Yes, Spermatogonium is a stem cell.
No
Type of cell division
Meiosis
Meiosis
Onset of gametogenesis
At puberty. Both meiosis I and II in spermatogonium begin at onset of puberty.
During embryonic development.
Meiosis I begins in fetal ovary. Meiosis II completes after onset of puberty in reproductive
cycles.
Continuous or cyclic
Continuous. Millions of sperms are produced each day.
Cyclic. Only one mature ovum is produced per reproductive cycle (of 28 days).
Occurrence of gametogenesis in life
Begins at puberty
Continues throughout life
Begins at menarche
Ends at menopause
No. of functional gametes in one cycle
4
1
Polar cells (that degenerate later) produced
No
Yes, one polar cell in each of meiosis I and II..
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
Seminar
Presentation on Oogenesis
Process Of Oogenesis
Multiplication Phase
Growth Phase
Maturation Phase
Ovulation
Hormones in Oogenesis
Significance of Oogenesis
References
AnswerOogenesis is the process by which ovum mother cells or oogo.pdfarasanlethers
Answer:
Oogenesis is the process by which ovum mother cells or oogonia gives rise to mature ovum- the
female gametes. The process takes place in the outermost layer- the germinal epithelium of the
ovary.
Meiotic Events in oogenesis:
Initially before birth, the oogonium undergoes mitotic divisions so as to increase its number. This
process takes place during the embryonic growth phase. No further addition to this number takes
place after birth. In the human embryo, the thousand or so oogonia divide rapidly from the
second to the seventh month of gestation to form roughly 7 million germ cells. After the seventh
month though, there is a sharp decline in the number of these newly formed cells. These
remaining cells are the ones entering the reductional division of meiosis (meiosis-1). These cells
enters into meiosis-1 but they are unable to advance through Prophase-1 of meiosis. These cells
are arrested in the diplotene sub-stage of Prophase-1 and they are maintained at this stage until
puberty. These cells are now known as primary oocytes. Even the primary oocytes continue to
die during this phase. Roughly only about 400 oocytes mature during the reproductive life of a
female periodically. At the onset of puberty, specific hormonal cues re-initiate the process of
meiosis.
During adolescence, the GnRH or gonadotropin releasing hormones released from the
hypothalamus signals the anterior pituitary to release hormones like LH & FSH which lifts the
cell cycle arrest in these cells and assists them in resuming meiosis. The primary oocytes
completes meiosis-1 and gives rise to a tiny polar body and another larger secondary oocyte with
greater content of cytoplasm ( unequal cell division). In some organisms , the polar bodies may
again divide to form 2 polar bodies while it dies off in case of humans. The secondary oocyte
thus produced advances through Meiosis-2 ( equational division) but halts at meiosis-2. The
secondary oocyte is released from the follicle and it travels towards the fallopian tube. The
immature secondary oocyte can re-enter cell cycle and complete the remaining sub-stages of
meiosis-2 only if union with a sperm takes place. The secondary oocyte progresses through
meiosis-2 giving rise to another polar body and a female pro-nucleus which unites with the
sperm and gives rise to the zygote or the fertilized egg. Thus begins the process of embryonic
development.
Developmental process in oogenesis:
Oogonia are formed from the primoridial germ cells of the ovary by mitotic cell division. By
growth & maturation oogonia increase in size and become primary oocytes. During this phase,
synthesis of food and factors required for further differentiation are synthesized. During the
growth phase, the primary oocytes gets surrounded by specialized cells of the ovary known as
follicle cells. Once they are fully formed, cavities are formed and these gets filled with their own
secretion. At this stage, it is known as Graafian follicle. Oocyte collects .
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Young Tom Selleck: A Journey Through His Early Years and Rise to Stardomgreendigital
Introduction
When one thinks of Hollywood legends, Tom Selleck is a name that comes to mind. Known for his charming smile, rugged good looks. and the iconic mustache that has become synonymous with his persona. Tom Selleck has had a prolific career spanning decades. But, the journey of young Tom Selleck, from his early years to becoming a household name. is a story filled with determination, talent, and a touch of luck. This article delves into young Tom Selleck's life, background, early struggles. and pivotal moments that led to his rise in Hollywood.
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Early Life and Background
Family Roots and Childhood
Thomas William Selleck was born in Detroit, Michigan, on January 29, 1945. He was the second of four children in a close-knit family. His father, Robert Dean Selleck, was a real estate investor and executive. while his mother, Martha Selleck, was a homemaker. The Selleck family relocated to Sherman Oaks, California. when Tom was a child, setting the stage for his future in the entertainment industry.
Education and Early Interests
Growing up, young Tom Selleck was an active and athletic child. He attended Grant High School in Van Nuys, California. where he excelled in sports, particularly basketball. His tall and athletic build made him a standout player, and he earned a basketball scholarship to the University of Southern California (U.S.C.). While at U.S.C., Selleck studied business administration. but his interests shifted toward acting.
Discovery of Acting Passion
Tom Selleck's journey into acting was serendipitous. During his time at U.S.C., a drama coach encouraged him to try acting. This nudge led him to join the Hills Playhouse, where he began honing his craft. Transitioning from an aspiring athlete to an actor took time. but young Tom Selleck became drawn to the performance world.
Early Career Struggles
Breaking Into the Industry
The path to stardom was a challenging one for young Tom Selleck. Like many aspiring actors, he faced many rejections and struggled to find steady work. A series of minor roles and guest appearances on television shows marked his early career. In 1965, he debuted on the syndicated show "The Dating Game." which gave him some exposure but did not lead to immediate success.
The Commercial Breakthrough
During the late 1960s and early 1970s, Selleck began appearing in television commercials. His rugged good looks and charismatic presence made him a popular brand choice. He starred in advertisements for Pepsi-Cola, Revlon, and Close-Up toothpaste. These commercials provided financial stability and helped him gain visibility in the industry.
Struggling Actor in Hollywood
Despite his success in commercials. breaking into large acting roles remained a challenge for young Tom Selleck. He auditioned and took on small parts in T.V. shows and movies. Some of his early television appearances included roles in popular series like Lancer, The F.B.I., and Bracken's World. But, it would take a
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As a film director, I have always been awestruck by the magic of animation. Animation, a medium once considered solely for the amusement of children, has undergone a significant transformation over the years. Its evolution from a rudimentary form of entertainment to a sophisticated form of storytelling has stirred my creativity and expanded my vision, offering limitless possibilities in the realm of cinematic storytelling.
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Monday, June 3, 2024 - Episode 241: Sergeant Rathebe nabs a top scammer in Turfloop. Meikie is furious at her uncle's reaction to the truth about Ntswaki.
Tuesday, June 4, 2024 - Episode 242: Babeile uncovers the truth behind Rathebe’s latest actions. Leeto's announcement shocks his employees, and Ntswaki’s ordeal haunts her family.
Wednesday, June 5, 2024 - Episode 243: Rathebe blocks Babeile from investigating further. Melita warns Eunice to stay clear of Mr. Kgomo.
Thursday, June 6, 2024 - Episode 244: Tbose surrenders to the police while an intruder meddles in his affairs. Rathebe's secret mission faces a setback.
Friday, June 7, 2024 - Episode 245: Rathebe’s antics reach Kganyago. Tbose dodges a bullet, but a nightmare looms. Mr. Kgomo accuses Melita of witchcraft.
Monday, June 10, 2024 - Episode 246: Ntswaki struggles on her first day back at school. Babeile is stunned by Rathebe’s romance with Bullet Mabuza.
Tuesday, June 11, 2024 - Episode 247: An unexpected turn halts Rathebe’s investigation. The press discovers Mr. Kgomo’s affair with a young employee.
Wednesday, June 12, 2024 - Episode 248: Rathebe chases a criminal, resorting to gunfire. Turf High is rife with tension and transfer threats.
Thursday, June 13, 2024 - Episode 249: Rathebe traps Kganyago. John warns Toby to stop harassing Ntswaki.
Friday, June 14, 2024 - Episode 250: Babeile is cleared to investigate Rathebe. Melita gains Mr. Kgomo’s trust, and Jacobeth devises a financial solution.
Monday, June 17, 2024 - Episode 251: Rathebe feels the pressure as Babeile closes in. Mr. Kgomo and Eunice clash. Jacobeth risks her safety in pursuit of Kganyago.
Tuesday, June 18, 2024 - Episode 252: Bullet Mabuza retaliates against Jacobeth. Pitsi inadvertently reveals his parents’ plans. Nkosi is shocked by Khwezi’s decision on LJ’s future.
Wednesday, June 19, 2024 - Episode 253: Jacobeth is ensnared in deceit. Evelyn is stressed over Toby’s case, and Letetswe reveals shocking academic results.
Thursday, June 20, 2024 - Episode 254: Elizabeth learns Jacobeth is in Mpumalanga. Kganyago's past is exposed, and Lehasa discovers his son is in KZN.
Friday, June 21, 2024 - Episode 255: Elizabeth confirms Jacobeth’s dubious activities in Mpumalanga. Rathebe lies about her relationship with Bullet, and Jacobeth faces theft accusations.
Monday, June 24, 2024 - Episode 256: Rathebe spies on Kganyago. Lehasa plans to retrieve his son from KZN, fearing what awaits.
Tuesday, June 25, 2024 - Episode 257: MaNtuli fears for Kwaito’s safety in Mpumalanga. Mr. Kgomo and Melita reconcile.
Wednesday, June 26, 2024 - Episode 258: Kganyago makes a bold escape. Elizabeth receives a shocking message from Kwaito. Mrs. Khoza defends her husband against scam accusations.
Thursday, June 27, 2024 - Episode 259: Babeile's skillful arrest changes the game. Tbose and Kwaito face a hostage crisis.
Friday, June 28, 2024 - Episode 260: Two women face the reality of being scammed. Turf is rocked by breaking
Tom Selleck Net Worth: A Comprehensive Analysisgreendigital
Over several decades, Tom Selleck, a name synonymous with charisma. From his iconic role as Thomas Magnum in the television series "Magnum, P.I." to his enduring presence in "Blue Bloods," Selleck has captivated audiences with his versatility and charm. As a result, "Tom Selleck net worth" has become a topic of great interest among fans. and financial enthusiasts alike. This article delves deep into Tom Selleck's wealth, exploring his career, assets, endorsements. and business ventures that contribute to his impressive economic standing.
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Early Life and Career Beginnings
The Foundation of Tom Selleck's Wealth
Born on January 29, 1945, in Detroit, Michigan, Tom Selleck grew up in Sherman Oaks, California. His journey towards building a large net worth began with humble origins. , Selleck pursued a business administration degree at the University of Southern California (USC) on a basketball scholarship. But, his interest shifted towards acting. leading him to study at the Hills Playhouse under Milton Katselas.
Minor roles in television and films marked Selleck's early career. He appeared in commercials and took on small parts in T.V. series such as "The Dating Game" and "Lancer." These initial steps, although modest. laid the groundwork for his future success and the growth of Tom Selleck net worth. Breakthrough with "Magnum, P.I."
The Role that Defined Tom Selleck's Career
Tom Selleck's breakthrough came with the role of Thomas Magnum in the CBS television series "Magnum, P.I." (1980-1988). This role made him a household name and boosted his net worth. The series' popularity resulted in Selleck earning large salaries. leading to financial stability and increased recognition in Hollywood.
"Magnum P.I." garnered high ratings and critical acclaim during its run. Selleck's portrayal of the charming and resourceful private investigator resonated with audiences. making him one of the most beloved television actors of the 1980s. The success of "Magnum P.I." played a pivotal role in shaping Tom Selleck net worth, establishing him as a major star.
Film Career and Diversification
Expanding Tom Selleck's Financial Portfolio
While "Magnum, P.I." was a cornerstone of Selleck's career, he did not limit himself to television. He ventured into films, further enhancing Tom Selleck net worth. His filmography includes notable movies such as "Three Men and a Baby" (1987). which became the highest-grossing film of the year, and its sequel, "Three Men and a Little Lady" (1990). These box office successes contributed to his wealth.
Selleck's versatility allowed him to transition between genres. from comedies like "Mr. Baseball" (1992) to westerns such as "Quigley Down Under" (1990). This diversification showcased his acting range. and provided many income streams, reinforcing Tom Selleck net worth.
Television Resurgence with "Blue Bloods"
Sustaining Wealth through Consistent Success
In 2010, Tom Selleck began starring as Frank Reagan i
From Slave to Scourge: The Existential Choice of Django Unchained. The Philos...Rodney Thomas Jr
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Welcome to SSA Philosophy, your ultimate destination for diving deep into the profound philosophies of iconic characters from video games, movies, and TV shows. In this episode, we explore the powerful journey and existential philosophy of Django Freeman from Quentin Tarantino’s masterful film, "Django Unchained," in our video titled, "From Slave to Scourge: The Existential Choice of Django Unchained. The Philosophy of Django Freeman!"
From Slave to Scourge: The Existential Choice of Django Unchained – The Philosophy of Django Freeman!
Join me as we delve into the existential philosophy of Django Freeman, uncovering the profound lessons and timeless wisdom his character offers. Through his story, we find inspiration in the power of choice, the quest for justice, and the courage to defy oppression. Django Freeman’s philosophy is a testament to the human spirit’s unyielding drive for freedom and justice.
Don’t forget to like, comment, and subscribe to SSA Philosophy for more in-depth explorations of the philosophies behind your favorite characters. Hit the notification bell to stay updated on our latest videos. Let’s discover the principles that shape these icons and the profound lessons they offer.
Django Freeman’s story is one of the most compelling narratives of transformation and empowerment in cinema. A former slave turned relentless bounty hunter, Django’s journey is not just a physical liberation but an existential quest for identity, justice, and retribution. This video delves into the core philosophical elements that define Django’s character and the profound choices he makes throughout his journey.
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Panchayat Season 3 - Official Trailer.pdfSuleman Rana
The dearest series "Panchayat" is set to make a victorious return with its third season, and the fervor is discernible. The authority trailer, delivered on May 28, guarantees one more enamoring venture through the country heartland of India.
Jitendra Kumar keeps on sparkling as Abhishek Tripathi, the city-reared engineer who ends up functioning as the secretary of the Panchayat office in the curious town of Phulera. His nuanced depiction of a young fellow exploring the difficulties of country life while endeavoring to adjust to his new environmental factors has earned far and wide recognition.
Neena Gupta and Raghubir Yadav return as Manju Devi and Brij Bhushan Dubey, separately. Their dynamic science and immaculate acting rejuvenate the hardships of town administration. Gupta's depiction of the town Pradhan with an ever-evolving outlook, matched with Yadav's carefully prepared exhibition, adds profundity and credibility to the story.
New Difficulties and Experiences
The trailer indicates new difficulties anticipating the characters, as Abhishek keeps on wrestling with his part in the town and his yearnings for a superior future. The series has reliably offset humor with social editorial, and Season 3 looks ready to dig much more profound into the intricacies of rustic organization and self-awareness.
Watchers can hope to see a greater amount of the enchanting and particular residents who have become fan top picks. Their connections and the one of a kind cut of-life situations give a reviving and interesting portrayal of provincial India, featuring the two its appeal and its difficulties.
A Mix of Humor and Heart
One of the signs of "Panchayat" is its capacity to mix humor with sincere narrating. The trailer features minutes that guarantee to convey giggles, as well as scenes that pull at the heartstrings. This equilibrium has been a critical calculate the show's prosperity, resounding with crowds across different socioeconomics.
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The creation quality remaining parts first rate, with the beautiful setting of Phulera town filling in as a scenery that upgrades the narrating. The meticulousness in portraying provincial life, joined with sharp composition and solid exhibitions, guarantees that "Panchayat" keeps on hanging out in the packed web series scene.
Expectation and Delivery
As the delivery date draws near, expectation for "Panchayat" Season 3 is at a record-breaking high. The authority trailer has previously created critical buzz, with fans enthusiastically anticipating the continuation of Abhishek Tripathi's excursion and the new undertakings that lie ahead in Phulera.
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Monday, 3 June 2024
Episode 47
A friend is compelled to expose a manipulative scheme to prevent another from making a grave mistake. In a frantic bid to save Jojo, Phakamile agrees to a meeting that unbeknownst to her, will seal her fate.
Tuesday, 4 June 2024
Episode 48
A mother, with her son's best interests at heart, finds him unready to heed her advice. Motshabi finds herself in an unmanageable situation, sinking fast like in quicksand.
Wednesday, 5 June 2024
Episode 49
A woman fabricates a diabolical lie to cover up an indiscretion. Overwhelmed by guilt, she makes a spontaneous confession that could be devastating to another heart.
Thursday, 6 June 2024
Episode 50
Linda unwittingly discloses damning information. Nhlamulo and Vuvu try to guide their friend towards the right decision.
Friday, 7 June 2024
Episode 51
Jojo's life continues to spiral out of control. Dintle weaves a web of lies to conceal that she is not as successful as everyone believes.
Monday, 10 June 2024
Episode 52
A heated confrontation between lovers leads to a devastating admission of guilt. Dintle's desperation takes a new turn, leaving her with dwindling options.
Tuesday, 11 June 2024
Episode 53
Unable to resort to violence, Taps issues a verbal threat, leaving Mdala unsettled. A sister must explain her life choices to regain her brother's trust.
Wednesday, 12 June 2024
Episode 54
Winnie makes a very troubling discovery. Taps follows through on his threat, leaving a woman reeling. Layla, oblivious to the truth, offers an incentive.
Thursday, 13 June 2024
Episode 55
A nosy relative arrives just in time to thwart a man's fatal decision. Dintle manipulates Khanyi to tug at Mo's heartstrings and get what she wants.
Friday, 14 June 2024
Episode 56
Tlhogi is shocked by Mdala's reaction following the revelation of their indiscretion. Jojo is in disbelief when the punishment for his crime is revealed.
Monday, 17 June 2024
Episode 57
A woman reprimands another to stay in her lane, leading to a damning revelation. A man decides to leave his broken life behind.
Tuesday, 18 June 2024
Episode 58
Nhlamulo learns that due to his actions, his worst fears have come true. Caiphus' extravagant promises to suppliers get him into trouble with Ndu.
Wednesday, 19 June 2024
Episode 59
A woman manages to kill two birds with one stone. Business doom looms over Chillax. A sobering incident makes a woman realize how far she's fallen.
Thursday, 20 June 2024
Episode 60
Taps' offer to help Nhlamulo comes with hidden motives. Caiphus' new ideas for Chillax have MaHilda excited. A blast from the past recognizes Dintle, not for her newfound fame.
Friday, 21 June 2024
Episode 61
Taps is hungry for revenge and finds a rope to hang Mdala with. Chillax's new job opportunity elicits mixed reactions from the public. Roommates' initial meeting starts off on the wrong foot.
Monday, 24 June 2024
Episode 62
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I Know Dino Trivia: Part 3. Test your dino knowledge
Gemetogenesis
1.
2. TERMS TO REMEMBER: Gamete: egg or sperm Gametogenesis: production of eggs or sperm Oogenesis: production of eggs Spermatogenesis: production of sperm Spermiogenesis: is the maturation process into sperm Follicle: where eggs mature in the ovary Ovulation: release of egg from follicle Polar body: nonfunctional product of meiotic divisions in oogenesis Zygote: Fertilized egg
3. Oogonia: mitotically dividing cells in the ovary, will become Oocytes Primary oocyte: decision has been made to undergo meiosis, cell has grown. Cells are arrested at this stage until puberty. Secondary oocyte: has completed first meiotic division the division was unequal in terms of cytoplasm Ovum: Ovulated egg, ready to be fertilized. If fertilized, the second meiotic division will occur, another polar body will be given off.
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