Question

how did vesalius go beyond galen and mansurs findings?

Explanation:

Vesalius conducted direct human dissections, which was more accurate than Galen's animal - based studies and Mansur's reliance on earlier authorities. He corrected many anatomical errors, provided detailed and accurate illustrations in his work "De humani corporis fabrica", and emphasized the importance of hands - on anatomical study.

Answer:

Vesalius conducted direct human dissections, corrected anatomical errors, provided detailed illustrations, and emphasized hands - on study.