My father obviously devoted considerable time to drawing the gills on this critter in his Sophomore Biology Notebook:
The stomach and nervous system seem sufficiently stylized that they’re not drawn from a specimen; I’m pretty sure a real crayfish doesn’t come apart quite so neatly.
Our Larval Engineer reports that the lab sessions for her second quarter of Anatomy and Physiology will involve dissecting sheep hearts and eyeballs (which arrive in plastic buckets festooned with hazmat stickers for the preservative). She regards this as more than making up for having to sit through A&P lectures and memorizing all those bones & muscles. Must be another generation-skipping trait, is all I can say…
The Smell of Molten Projects in the Morning 