Transmission electron micrograph (TEM) of the ultrastructure of apposed microvilli of two enterocytes of the small intestine epithelium. Microvilli are finger-like projections of the apical surface membrane of intestinal absorptive cells. They are about 1 micrometre in length with a core of actin filaments and greatly increase the membrane surface area for absorption of nutrients in the intestinal lumen. Fluid secretion by enterocytes also occurs across the microvilli. Magnification: x10, 000 when width printed at 10cm. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Microscape |
Bildgröße: | 5079 px × 3916 px |
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