Ojo bastones microscope humano cuerpo electron conos microscopio microscopic scanning retina partes ciliar zona cristalino ciliary anatomia elmundo Microscope light parts part diagram function definition diaphragm iris study lesson water source laboratory lab base summary Iris of the human eye as seen through an electronic microscope
Iris Diagram Microscope
Lab 1: the laboratory microscope The microscope’s iris diaphragm: what it does and how it works