Axones nerviosos - A cross section of a bundle of nerve fibers. Axons (orange) are wrapped in myelin (purple); an extension of the membrane of glial cells. Myelin has high lipid content, and acts to insulate the axons, causing them to transmit nerve impulses much faster.
18 Everyday Things Made Awesome Under A Microscope.
Somewhere in the Kunsthof-passage of Dresden, Germany, there’s actually an outdoor building wall that makes music whenever it rains. Christoph Roßner, Annette Paul and Andre Tempel, who live in the building, were the ones who decided to rig a bunch of funnels to coax a grand performance out of musical instruments by hydraulic action. It’s crazy, we can’t think of a better reason to wish for bad weather.
Inner ear hair cells, Scanning Electron Microscope. Coloured scanning electron micrograph (SEM) of sensory hair cells from the inner ear. These cells are surrounded by a fluid called endolymph. As sound enters the ear it causes waves to form in the endolymph, which in turn cause the hairs to move. The movement is converted to an electrical signal that is passed on to the brain. Each crescent-shaped arrangement of hairs lies atop a single cell.