Spermatogenesis (Gametogenesis) - Concept of Stem cells & Blood Testis barrier
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- Опубликовано: 9 июл 2024
- In this visual Lecture, Dr. Aizaz talks about:
00:00 Introduction
00:25 Intro to Gametogenesis
04:52 Role of Primary Spermatocyte
07:03 Structure of Testis and Semineferous Tubules
10:23 Formation Spermatogonia A Dark (Spermatogonial Stem cells reserve) and Spermatogonia A Pale and differences between them
17:41 How Spermatogenesis start with the onset of puberty
18:00 Role of GnRH (Gonadotrophin Releasing hormone), FSH, LH and Testosterone
22:11 Formation of Spermatogonia B
23:31 Importance of Blood Testis Barrier
26:02 How Primary Spermatocytes cross Blood-Testis Barrier
27:29 Formation of Secondary Spermatocytes and Spermatids
28:28 Incomplete Cytokinesis and formation of cross-bridges
30:35 Importance of Adult Stem cells
Website: www.medicovisual.com
Email: draizaz@medicovisual.com
Maza aa gaya kasam se... In my student life I have never seen such a complete lecture on spermatogenesis which can easily be understood any curious biology student... Keep the good work man...
Thanks a lot for such words of appreciation
thanks alot... excellent lecture sir, u can make people interested in subject
Sir ji I am from India!! Although there are less views but believe me ,an amazing lecture it was!!!! I really search for these types of channels!!!!
Thank you so much sir!!!
Hoping that you also make more videos sir!!!
Love from Pakistan
@@MedicoVisual najeeb sir ki yaad dila di aapne!!!!
I also make medical lectures and really it takes time to make😃
@@GauravSharma-lx9rb Dr Najeeb is my spirtual father and guruji.
@@GauravSharma-lx9rb I am glad to know that you also teach on youtube. I will watch your lectures tomorow
@@MedicoVisual thank you sir
Thank you for making Embryology Understandable 🙏
Zbrdst❤❤
No wayyyyy.... these lectures are priceless..thank you so much sir 🥺🙏
Exceptional lecture , Allah ap ko is ka ajar dy , Ameen
I want to fall on your feet and thank you..i am an msc student and i have never heard such a detailed explanation of spermatogenesis...thank you so much ♥️
I am honoured sir 🤗🙏
Sir thank you for your efforts ❤
Allah taala apko hmeesha kamyab rkhe surkhru rkhe hnsta muskurata rkhe sarfaraz rkhe tndrust rkhee bhai ♥️💓⚾⭐⭐⭐❤️❤️❤️💜💚❤️❤️❤️
Aameen. Thanks for the prayers.
What an elegant explanation! Keep such things up sir.....
Thats great! u are amazing SIR!
👍
❤❤no words to comment❤
Great job!
Brilliant teacher with Brilliant explanation ❤
Brilliant lecture! Thank you!
wow amazing. keep doing it.....
The way you teach is 💙
Lovin' it❤❤🌌👐
Very easy to remember especially by medical students. Excellent lecture. God bless you 👌👌👌👌
Thank you so much
Great lecture
Thankyou sir 😊
thank you
thank youuuuu sooo mutch 💜💜💜💜💜💜💜💜
Good great and zabardast Dil jeeet liaa
Thanks
Maza aya
The best teacher ever ❤️❤️
Thank you so much for such nice comments
Excellent sir thank u
Most welcome
Easy to remember thank you sir clear concept 😇😇
You are most welcome.
Excellent 👌
Thanks
How beautifully designed everything also in micro level by Allah!!!!!
Good understandable lecture specially for medical students .keep it up .
Thank you so much
Excellently explained sir......thank you so much......
Sir but blood testes barrier not get cleared......as u said during crossing over.... certain changes occur to primary spermatocytes....which attracts immune cells....how it is possible..?? If so happens it happens it will become case of autoimmune disorder....!!!
What types of changes occur during crossing over which leads primary spermatocytes to identify as foreign cells...???
Sir....when cytoplasmic barriers of spermatids broken..?? Are any factors help in breaking of these cytoplasmic barriers...???
hello sir
you said from 46 chromosomes it will be 23 chromosomes* after meiosis but the 4 daughter cells that are formed after meiosis should have 23 chromatids* why we say that they have 23 chromosomes ? According to definition of chromosome it has 2 homologous chromatids?
Even if a chromosome contain single copy (of chromatids) or double copies (double chromatids), it is still a chromosome, technically..
Thank you so much,,can I ask from where u graduated??
Lahore Pakistan
@@MedicoVisual oo wow,,am also from Pakistan,,😊 if u don't mind can I ask you about ur college name??
@@khusi8389 please email on draizaz@medicovisual.com or WhatsApp +923037241030
@@MedicoVisual 😊
Mitosis give 2 daughter cells different from parental cell ? Pls can u explain i think it's identical
Yes, they are identical as far as the DNA is concerned. However they may become specialized into different type of cells.
Please share the timestamp that you are referring to, so I know the context.
It's 12.10 u said that 2 daughter cells are different from parental cell but I think mitosis gives identical cells to the parent cell what makes them different if they go differentiation /
How the spermatogonia gives one identical and one different that means that the other one has already gone for differentiation?
@@houriak848 Yes, you are 100% correct. I made a mistake there. Thanks for pointing out
Hello aren’t you the guy attending Dr.Najeebs lectures preparing for USMLE?
I had been attending Dr Najeeb lectures for about 8 years. I have also worked for him for 3 months, then left the job. However I am not preparing for USMLE.
@@MedicoVisual Great! Wish you all the best man. By the way I had difficulties understanding pharyngeal apparatus and found your 3D awesome. Even UOWRDL was not of help. Hats off