To be completely honest, I'm not fond of O&G but I need to study and grasp concepts related to this subject so I would be able to perform well in the professional exam that would be held in August 2019.
On the bright side, explaining concepts to others is a good way to reinforce your understanding. All the better for subject specification you don't enjoy.
This is a nice post, however it requires me to research a lot of terms to read it. For instance, I actually didn't know what a trophoblast was.
The conduits were supposed to be a wide bore, low resistance and large capacitance vessel but as the trophoblast failed to proceed with the modification, it becomes the opposite of what we should have expected (narrow bore, high resistance and small capacitance vessel).
Why does this happen?
Stylistic suggestion: Think about using the commands <divclass=pull-right/left> </ div> (add a space between div and class, and remove the space between /div) for more aesthetically pleasing image placement and slightly increased readability.
I guess you mean why the trophoblast failed in modifying spiral arteries, right? If that's the case, unfortunately, the pathophysiology is not properly understood but we do know that this invasion would fail 40% of the time for people who have experienced pre-eclampsia in the previous pregnancy.
Thanks. I would definitely use that in the markdown for my future article.