"Many still believe the uber-religiosity of the Dark Ages prevented things like autopsies and medical dissection from even happening"
Sounds like religion interfering with science, still. The resistance was on a moral basis, supposedly, but that didn't stop torture, wars, mass killings during the Middle Ages.
Now, just stop and think about it a moment, Egyptians were practicing a credible form of pharmacy long before the Greeks. Research continues on a "genetic, chemical and comparative basis to compare the medicinal plants of ancient Egypt with modern species and to investigate similarities between the traditional remedies of North Africa with the remedies used by their ancestors of 1,500 BC." Read more: Egyptians, not Greeks were true fathers of medicine
"Surgery was considered to be a part of general medicine in ancient Egypt, not a specialty as we consider it today. Almost all of the evidence that exhibits surgical procedures is related to trauma." Surgical Practices in Ancient Egypt
French head-and-shoulders specimen with radiocarbon dating puts the age of this body between A.D. 1200 and A.D.1280, an era once considered part of Europe’s anti-scientific “Dark Ages.”
"When the Roman Empire fell in the fifth century, Europe fell into what became known as the early medieval period or the dark ages. Much of the knowledge gained by earlier civilisations was lost leaving medieval medicine and healing practices in Europe largely reliant on superstition and speculation."
"The vast amount of war and social unrest also contributed to the slow progress of medicine, as did the influence of the church which forbade human dissection, encouraged people to look to prayer for their healing"