I'm a little confused as to when 'spiral arteries' develop. In the video it says they develop in the leuteal phase during the no-pregnancy section but I just read elsewhere that spiral arteries are transformed/ spiralized by trophoblasts of the blastocysts (lack of the PRECAM-1 protein that causes spiralisation is thought to be a cause of preeclampsia). Does this mean that the increase in progesterone during the leuteal phase increase blood flow to the endometrium in some other way? (not hating or nit-picking for the sake of it just interested!)
Excellent video! how is this free again??
The best channel and the best illustrators I've ever seen. Thanks alot
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Sir , you saved my life . Thank you !!
SERIOUSLY AMAZING couple of videos! Thank you!
So well explained.bravo!
"when the egg fertilises it gonna need to hangout and grow" Love you guys !
Now I know what is going on with this chart .Thank you so muchhh.
Song Nainway well can u help me with my chart ??😬
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Beautiful! I emailed this to my whole class. :)
Thank you, thank you, thank you.
thanks a lot Khan Academy, i really wont be able to thank you enough for this amazing explanation :D you are the BEST!!
Excellent explanation!
You are the best! Thank you 🙏
0:01
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Thank you so much! Great explanation!
God!!!! you are amazing
thank you very much
Amazing drawing skills and explanation
great video!
Merci beaucoup dear
superb
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Thank you
Very nice
beautiful u make it easy for me 😊
Awesome
thank youu
I'm a little confused as to when 'spiral arteries' develop. In the video it says they develop in the leuteal phase during the no-pregnancy section but I just read elsewhere that spiral arteries are transformed/ spiralized by trophoblasts of the blastocysts (lack of the PRECAM-1 protein that causes spiralisation is thought to be a cause of preeclampsia). Does this mean that the increase in progesterone during the leuteal phase increase blood flow to the endometrium in some other way? (not hating or nit-picking for the sake of it just interested!)
Bilal khan Group 14 GME 4th semester
sir u just fertilized my eggs
Aakash Gal GME_16
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Thank you