Intestinal lining. Coloured scanning electron micrograph (SEM) of a freeze fracture section through the lining of the small intestinep. 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 this are goblet cells (purple ovals),which secrete mucus to lubricate food and prevent self-digestion. The lamina propria (brown) contains the blood supply that transports the products of digestion. Magnification: x500 when printed 10 centimetres tall | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 4000 px × 4503 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |