Fly's eye. Coloured scanning electron micrograph (SEM) of a fly's compound eye. Protective bristles cover its surface. The eye is made up of numerous visual units,known as ommatidia. Each ommatidium consists of an outer cuticle covering a lens,beneath which is a group of light-sensitive cells known as the retinula. Nerve fibres from the retinula converge onto the optic nerve,relaying visual signals to the brain. The image seen by a fly is thought to be a mosaic image,poorly focused but good at detecting movements. Magnification: x88 at 6x7cm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nishinaga, Susumu |
Bildgröße: | 3720 px × 3035 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |