Human tongue surface, coloured scanning electron micrograph (SEM). Covering the tongue's surface are scale-like projections called filiform papillae, which sense pressure. The round areas (purple) are fungiform papillae which contain the taste buds.
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.
Credit: David Gregory and Debbie Marshall, Wellcome Images. Colour-enhanced scanning electron micrograph of a blood clot, with squamous tissue visible beneath. As a blood clot on a surface injury dries out it forms a protective scab over the wound allowing new skin to grow underneath. Copyrighted work available under Creative Commons by-nc-nd 2.0 UK.
A freeze fracture scanning electron micrograph of a single cell. The cell nucleus is orange. The small black holes are nuclear pores. The cell membranes are purple, the endoplasmic reticulum is pink, and the golgi apparatus is green. Image credit; Lennart Nilsson