“when the Church had allowed the dissection of human corpses for several centuries.”
Galen: 158 AD, hardly Middle-Ages and dissected apes and pigs. Pigs have a similar skeleton to human. You should read books of History, not Christian sites rewriting history.
Some Christians preserved some books, but most of the job was done by Secular Rulers using the Clergy to do so (Charlemagne). “In the profoundly Christian centuries of the European Middle Ages the prevailing mood is not conducive to scientific enquiry. God knows best, and so He should - since He created everything. Where practical knowledge is required, there are ancient authorities whose conclusions are accepted without question” From http://www.historyworld.net/

Pope Boniface VIII (1235- 1303) prohibited the cutting of human bodies. I give you it was not specially against dissection, but it had the same result.

“Christianity was responsible for the preservation, advancement, and dissemination, of knowledge prior to the Renaissance” Wrong again. The preservation, advancement and dissemination of knowledge were Muslim and Jewish.

“which explains why the French do it” How many French do you know?

“Bashing Christianity as a weird anti-intellectual mysticism is an Enlightenment thing” Bashing? To tell that Christianity was not that great and responsible for more obstruction than step forward is bashing? All great sciences discoveries were done against the will of all Christianities.