Realistic 3D Anatomy Models for Educational App

I am developing an educational app aimed at high school students and I need a series of reslistic 3D models of anatomical structures. Example of models required are the brain, eye, and heart.
Model must be medium - low poly.

Software : Blender.

Ideal Skills:
- Proficiency in 3D modeling software blender


Please provide examples of similar projects you have completed in your proposal.