This is a colored scanning electron micrograph (SEM) of inner ear hair cells in the organ of corti, in the cochlea of the inner ear. One of the 62 stunning scientific images presented Popsci.com. They’re not all medicine or neuroscience related but they’re all stunning, have a look at them on Popsci.com, with explanations such as:
These cells are surrounded by a fluid called the endolymph. As sound enters the ear it causes waves to form in the endolymph, which in turn cause these hairs to move. The movement is converted into an electrical signal, which is passed to the brain. The V-shaped arrangement of hairs lies on the top of a single cell. Magnification: x21,000 when printed 10cm wide.