I remember reading, some time ago, that the embalmers had a tool to insert into the mouth that would conveniently allow the brain to be removed. Naturally, the tool took the shape of the seven-stared asterism, but not scooped. Like a bent metal rod in the shape of the plough.
It went up the nose, typically the left nostril; remember how little kids do art in school (or used to), and poke a hole in one end of a raw egg, carefully scramble the insides, drain ‘em out, and make them into Christmas tree ornaments? That’s kinda the process.
I thought they took the brain out through the nose.