An organ model comprises a polymer body formed from one or more selectively deposited substructures of a printable polymer-based ink composition, wherein the one or more selectively deposited substructures form a printed geometrical structure that corresponds to at least a portion of an anatomical structure of an organ, wherein a formulation of the printable polymer-based ink is selected such that the printed geometrical body has one or more material properties that match or substantially match one or more corresponding tissue material properties of an organ tissue, and an electronic device integrated onto a surface or into a structure of the printed geometrical structure.