Autopsy
· autopsia - seeing with one's own eyes
· seeing for yourself
· postmortem examination

1678: The Cartesian attempts to solve the motions of the heart mechanically seem conflicted by autopsy and experiment
1881:The physician's autopsy of President Garfield shows the bullet to be nowhere near where it was supposed to be

Dissect:
· to separate into pieces
· expose the several parts of an object for scientific examination
· to analyze and interpret minutely

Science:
· scientia - having knowledge
· scire - to know
· scindere - to cut

Conscience:
· con - with, together, jointly
· scire - to know