Very solid work all around,

A few things though

  1. line weight on arrows should be localized to the bends

  2. I think you should focus more on drop shadows for your dissections

  3. also try to do 2 different textures for the inside and outside of the dissections

  4. for the form intersections shade the face of the shape that faces the viewer i think that would make it look a lot more solid

  5. more shadows for the organic intersections

Over all though really good work.