Small intestine villus. Coloured scanning electron micrograph (SEM) of a freeze fracture section through a villus of the intestinal lining. Villi are finger-like projections that increase the surface area of a structure. The outer surface is mostly columnar epithelium (pink),which absorbs food. Within in the epithelium are goblet cells (dark pink ovals),which secrete mucus to lubricate food and prevent self-digestion. The lamina propria or central core (orange) contains the blood supply that transports the products of digestion,individual red blood cells (red) are seen within it. Magnification: x400 at 6x7cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 1846 px × 2100 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |