It may be quickest to simply do an internet search on your topic. There are many, many sets of free medical images available. This guide highlights some of the largest; there are also many additional smaller but important websites that can be found with a quick search.
NeuroMorpho.Org is a centrally curated inventory of digitally reconstructed neurons. It contains contributions from dozens of laboratories worldwide and is continuously updated.
Complete, anatomically detailed, three-dimensional representations of the normal male and female human bodies; transverse CT, MR and cryosection images of representative male and female cadavers.
