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Good afternoon sir, Your class are so good and very usefull to all Sir I have a small about this topic *In the oogenesis process . In mitosis process the cells are dividing In two the one cells that form to ovum the another follicle cells are distorying* My question is how the cell are destroying and the destroyed cell are how destroy in our body*
Thank you for u explanation I have a doubt sir if sperm won't enter the vagina means secondary oocyte is released during menstruation aa sir but u told that menstrual flow has unfertilized ovum explain me plzzz sir
@@tamilcinematics342 neenga one year ku munnadi ketrukinga. So na ungaluku sollala. Ungala madriye vera yarukavdu doubt iruntha paathu therinjikatume nu than ipo sonnen😅
Hi sir I've a doubt, what will be the answer for this question ,how many polar bodies are formed during oogenesis sir?? Even though it's degenerating !
Sir meiosis will bring four haploid in such case ....at the end it should result in four cells but you supposed to tell two cells ...pls explain it sir
Meiosis resulting in 4 daughter haploid cells is seen in spermatogenesis. But in Oogenesis, there's unequal division of cytoplasm to the daughter cells, meaning at the end of first meiosis, 2 daughter cells are formed but entire cytoplasm from the parent cell goes into only one daughter cell (secondary oocyte) and the other daughter cell becomes 1st polar body. During 2nd meiotic division, secondary oocyte divides into 2 cells, but again there's unequal division of cytoplasm, leading to one daughter cell (mature oocyte) getting all cytoplasm and the other daughter cell becomes a polar body. Also the 1st polar body formed at the end of meiosis I also divides forming 2 polar bodies. So at the end we have 1 mature oocyte and 3 polar bodies
Sir I Have One Dout.... Meiosis 1 and 2 Nadakrapa cell Divide aaguthu....lpolar body form Aaguthu...... Andha Polar Body Marupdiyum Divide aaguma sir Illa Degenerate aairuma...plz Ans Pannunga Sir
The 1 st polar body formed at the end of meiosis I, divides again, forming 2 more polar bodies. At the end of meiosis II, we have 1 mature oocyte and 3 polar bodies. Polar bodies generally degenerate. Sometimes polar body biopsy is done for prenatal genetic screening. In some species, the polar body may re-merge with the egg cell, effectively fertilizing it. This can result in a viable embryo that has only one parent, a process called parthenogenesis.
As primordial follicles(primary oocyte surrounded by flat epithelial cells) begin to grow, surrounding follicular cells change from flat to cuboidal and proliferate to produce a stratified epithelium of granulosa cells, and the unit is called a primary follicle
Sir one humble request sir please.... Please Sir if possible please can u upload the current neet model papers of (full syllabus) Gpcc in our telegram group sir please sir... B
sir, what happens to that polar body? and after a female undergoes tubectomy ,only the endometrium layer gets degrades and the ovary are not ruptured and released then where does this ovary gets accumilated? and in my mock test i got a question that when one ovary of a female is removed surgically then how does menstrual cycle will happen? but i gave a answer that menstrual cycle will occur alternatively at every month but its wrong.
@@gayukarthi7661 menstruation continues because endometrium which is shed is due to hormonal changes (Estrogen and progesterone). There's no clear cut rule that ovaries release ova alternatively. So if one ovary is removed it doesn't mean that menstruation will occur once in 2 months. In tubectomy only a part of fallopian tube is cut and ligated. Ovary is not removed in tubectomy. So the endometrial changes continue because of hormonal changes. The aim of tubectomy is to prevent fertilisation. For that we need to prevent sperm from meeting ovum. If we ligate the tube, there's no fertilisation. The ovum released by the ovary if it's not fertilised, it'll automatically undergo apoptosis and degrade. In oopherectomy surgery, ovaries are removed. Now there's no estrogen/progesterone to prime the endometrium. So endometrium atrophies.
Ovum(primary oocyte) completes its meiosis I and enters meiosis II but gets arrested in metaphase stage of meiosis II just 3 hours before ovulation(now we call it secondary oocyte). Meiosis II is complete only after fertilisation i.e. only after a sperm penetrates a secondary oocyte.
Secondary oocyte released during every ovulation will degenerate in 24-48 hours if it's not fertilised by a sperm. During menstruation, endometrium is shed
Actually secondary oocyte dha every month release aavum and if the sperm triggers it will lead to meiosis 2 and the zygote will be formed ..if the sperm is not triggering , the secondary oocyte will degenerate , this is called as menstruation
Yes atresia occurs after birth also. total number of primary oocytes at birth is estimated to vary from 600,000 to 800,000. During childhood, most oocytes become atretic;only approximately 40,000 are present by the beginning of puberty, and fewer than 500 will be ovulated. Some oocytes that reach maturity late in life have been dormant in the diplotene stage of the first meiotic division for 40 years or more before ovulation
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0
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Sir,plzzz 12th bio-zoology lessons full ah teach panuga, sir.unga teaching sema....
Your explanation awesome...excellent way of teaching...after 2 years I am hearing good teaching method
Ur my next god sir , thank you 😊😊😊 for teaching us
East or west
Your explanations are best
Thanks a lot 🙏🙏😊😊😊
Sir enga ivlo naala irundheenga....Mass teaching .....we are very blessed to have a teacher lyk u
Respected Sir,
Thank you for your wonderful explanation.
Thank you sir 🙏 for such a simple and clear explanation.
Thank you for u crystal clear explanation sir
Sir you do a small correction it's not 2 million follicles in ovaries its couple of million in EACH ovary
Sir I am Msc bio chemistry student sir your video all use full for me sir thanks lots I'm so lucky sir to attan your class I got clear explanation 😎😎
Deivam sir neenga 🙏🙏the best teaching
Thank you😊✌️
Sir nice teaching but one doubt.. in this process u did not say about the primary, secondary and tertiary follicle
3.53 - 7.45 superb ★★★☆☆♥♥♡
Thanks a lot😊✌️
Sir your did crystal clear explanation. I understood excellently thank you sir. Put more videos
Sure, thank you✌️😊
Anyone from 2024😊
It was so useful for me... I understood after a long time👌🏼Thank u sir🙏🏻
Good afternoon sir,
Your class are so good and very usefull to all
Sir I have a small about this topic
*In the oogenesis process . In mitosis process the cells are dividing In two the one cells that form to ovum the another follicle cells are distorying*
My question is how the cell are destroying and the destroyed cell are how destroy in our body*
Thank you for u explanation I have a doubt sir if sperm won't enter the vagina means secondary oocyte is released during menstruation aa sir but u told that menstrual flow has unfertilized ovum explain me plzzz sir
Sir if the action is triggered by sperms...then ovum becomes fertilized ?? So how come it is triggered by sperms
Super sir ❤
Thank you sir...god bless you always
Thanks a lot for your superb explanation 😉👍 sir
I understand ,sir
Sir but the vitellogenesis is the formation of yolk in vertebrates other than viviparous forms
Crystal clear explanation!!!!
Very excellent teaching
Deiivemae thank you
Totally 3polar bodies form one in primary another one in secondary one more we're form in secondary place?
sir what is mean by primary follicle...please tell about it ...me in reply sir....
When PRIMARY OOCYTE gets surrounded by a layer of GRANULOSA CELLS it is called a primary follicle.
@@therealrayzel na 12 th finished 😒🤐
Padikum bothu la yaru slu la la...😐
@@tamilcinematics342 neenga one year ku munnadi ketrukinga. So na ungaluku sollala. Ungala madriye vera yarukavdu doubt iruntha paathu therinjikatume nu than ipo sonnen😅
@@therealrayzel nandrigal tholarey...✨
Sir molecular biology essay questions vedioe upload pannunga please
Sir is there any video on , external genitilia, parturition and lactation topics
Sir ovum is alecithal ...then how does formation of yolk takes place?
Veraa leval la purunjathu tq Anna😁
awesomw sir semma teaching
vera level explanation sir
Sir nenga mei1 nadakum podhu secondary oocyte unu soninga, but engaloda text bookla primary oocyteunu iruku . Formation of yokna granulosa cella sir
Actually i refer red Truemen elementary biology pa
Really it's useful 🙂
sir can we say that..secondary oocyte is formed when the female attains puberty...??
Super sir
Sir I have a doubt regarding the follicles. Do the development of sec , tertiary and then graffian follicles occur after puberty? .Pls do reply sir
Pls reply sir
Yes. It occurs during menstrual cycle
sir, human ovum is alecithal , then how the yolk would form?
Hi sir I've a doubt, what will be the answer for this question ,how many polar bodies are formed during oogenesis sir?? Even though it's degenerating !
3
Sir what it primary follicles
Sir how do u say no more primary folliclesyare after birth but in book no more oogonia is added after birth
Thankyou sir🙏🏻👍🏻
Sir menstrual cycle poidunga sir
Soon i upload✌️😊
@@BiologySimplifiedTamil thanks a lot sir....
Thaliva you're great🎉🎉
Sir,but in 1st month there is no development of ovary
Sir female reproductuve system video upload pannunga sir
Thank you sir
Sir meiosis will bring four haploid in such case ....at the end it should result in four cells but you supposed to tell two cells ...pls explain it sir
THE PROCESS MEIOSIS INCLUDES MEIOSIS1AND MEIOSIS 2 TOTALLY 4 CELLS
Meiosis resulting in 4 daughter haploid cells is seen in spermatogenesis.
But in Oogenesis, there's unequal division of cytoplasm to the daughter cells, meaning at the end of first meiosis, 2 daughter cells are formed but entire cytoplasm from the parent cell goes into only one daughter cell (secondary oocyte) and the other daughter cell becomes 1st polar body.
During 2nd meiotic division, secondary oocyte divides into 2 cells, but again there's unequal division of cytoplasm, leading to one daughter cell (mature oocyte) getting all cytoplasm and the other daughter cell becomes a polar body. Also the 1st polar body formed at the end of meiosis I also divides forming 2 polar bodies.
So at the end we have 1 mature oocyte and 3 polar bodies
sir oru doubt,
indha oogenesis; discontinuous process "before fertilization ahh ilana after fertilization ahh" explaian pandringala
Before fertilization
What will happen to the degenerated polar bodies
Nice & very useful
Keep going on 👍
அருமை ஐயா
Thank you🙏😊😊😊
Sir I Have One Dout.... Meiosis 1 and 2 Nadakrapa cell Divide aaguthu....lpolar body form Aaguthu...... Andha Polar Body Marupdiyum Divide aaguma sir Illa Degenerate aairuma...plz Ans Pannunga Sir
Degenerate ahum pa
The 1 st polar body formed at the end of meiosis I, divides again, forming 2 more polar bodies.
At the end of meiosis II, we have 1 mature oocyte and 3 polar bodies.
Polar bodies generally degenerate.
Sometimes polar body biopsy is done for prenatal genetic screening.
In some species, the polar body may re-merge with the egg cell, effectively fertilizing it. This can result in a viable embryo that has only one parent, a process called parthenogenesis.
Tq sir
Ivalo solluraga super but primary follicle na enna nu solla la ya🙄🤦🏻♀️
Sorry pa
😂
As primordial follicles(primary oocyte surrounded by flat epithelial cells) begin to grow, surrounding follicular cells change from flat to cuboidal and proliferate to produce a stratified epithelium of granulosa cells, and the unit is called a primary follicle
How many polar bodies form in oogenesis sir
11th stdla neural control and chemical coordination ,videola solli thanga
Soon i upload✌️😊
1st polar body after puberty ku apuram thaa form aakuma sir
super sir
Amazing
Well
Sir one humble request sir please.... Please Sir if possible please can u upload the current neet model papers of (full syllabus) Gpcc in our telegram group sir please sir... B
Sure soon i upload😊✌️
Thankxxx a lot Sir.. It really helps us a lot to practice... 😇😇😇😇
Thank you sir ....😊😊
sir, what happens to that polar body? and after a female undergoes tubectomy ,only the endometrium layer gets degrades and the ovary are not ruptured and released then where does this ovary gets accumilated? and in my mock test i got a question that when one ovary of a female is removed surgically then how does menstrual cycle will happen? but i gave a answer that menstrual cycle will occur alternatively at every month but its wrong.
Polar body degenerates, and As usual menstrual cycle happens
sir what happens to that ovary
sorry for disturbing sir, how does usual menstrual cycle will happen bcoz for every month alternatively egg is released from each ovary
@@gayukarthi7661 menstruation continues because endometrium which is shed is due to hormonal changes (Estrogen and progesterone). There's no clear cut rule that ovaries release ova alternatively. So if one ovary is removed it doesn't mean that menstruation will occur once in 2 months.
In tubectomy only a part of fallopian tube is cut and ligated. Ovary is not removed in tubectomy. So the endometrial changes continue because of hormonal changes. The aim of tubectomy is to prevent fertilisation. For that we need to prevent sperm from meeting ovum. If we ligate the tube, there's no fertilisation. The ovum released by the ovary if it's not fertilised, it'll automatically undergo apoptosis and degrade.
In oopherectomy surgery, ovaries are removed. Now there's no estrogen/progesterone to prime the endometrium. So endometrium atrophies.
Sir where does the meiosis 2 process occur in ovum or uterus
In fallopian tube 2nd meiosis take place
Further you have doubt means ask me
Ok
Ovum(primary oocyte) completes its meiosis I and enters meiosis II but gets arrested in metaphase stage of meiosis II just 3 hours before ovulation(now we call it secondary oocyte). Meiosis II is complete only after fertilisation i.e. only after a sperm penetrates a secondary oocyte.
Very useful put more videos
Thank you
God bless you bro
Thanks yuh sir..🎉
Romba thanks sir
Sir neenga neela bakore mam video pathu dhan la class edukureenga😜
CONCEPT IS SAME ONLY KNOW.....IT WON'T CHANGE ACCORDING TO THE TEACHERS
sir one doubt please answer me mother la decrease akuma illa child ku decrease akuma
Follicles reduce in mother's ... complete reduce takes step by step
Superrr teaching sir🤗🤗
Thankyou sir
Sir, naa expected panna pointu neenga sollala! 😞😞
awesome sir
Sir can you pleae post videeo on reproductive health
Thank u sir,!,!
Great sir
Weldone bro 👍👍
It becomes a zygote after sperm entry into the egg
Anyone from 2023☺️
Sir neenga telegram group nadathuringa
Yes, mail me 2senthil7@gmail.com
I send you the link
Sir puberty appo secondary oocyte mutum tha irukum athu sperm enter ana aprm tha division akuma sir?
Sir when they will conduct neet!??
sipporal sathya neega eppa iruthu neet padikiriga
As per NTA report, last week of june
Biology Simplified Tamil sir CRT information aa neet last week of June
🙏
Yes it's the circular given by NTA, on first week of April.
During menstruation, is secondary oocytes are released out in female body,? Please reply me sir and also give me ur email is sir
Sir
Secondary oocyte released during every ovulation will degenerate in 24-48 hours if it's not fertilised by a sperm.
During menstruation, endometrium is shed
Sir since you are giving instructions in Tamil why don't you write the board work in Tamil? Becos how could the students understand the terminologies.
But daily my stress level is increasing sir
Don't compare with others, be confident😊
@@BiologySimplifiedTamil
செம நீங்க நல்ல sir❤️ i love u
Sir ....
After puberty
Ella month um ovum release aagum .... appo ovvoru time um
eppadi sperm trigger pannum ...?
Actually secondary oocyte dha every month release aavum and if the sperm triggers it will lead to meiosis 2 and the zygote will be formed ..if the sperm is not triggering , the secondary oocyte will degenerate , this is called as menstruation
Does atricia occurs after birth also
No
Yes atresia occurs after birth also.
total number of primary oocytes at birth is estimated to vary from 600,000 to 800,000. During childhood, most oocytes become atretic;only approximately 40,000 are present by the beginning of puberty, and fewer than 500 will be ovulated. Some oocytes that reach maturity late in life have been dormant in the diplotene stage of the first meiotic division for 40 years or more before ovulation
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Really dont have an idea y the hell subtitle running 🤣🤣🤣🤣
It is all your fault just turn off the caption option...then you won't see subtitles again..
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Sir pls reply my below comment