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Clip Details
Clip ID#:
4990882
Number of Views:
20
Model Released:
No
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0
Property Released:
No
Date Uploaded:
10 May 2011
Date Created:
1 Jun 2009
Frame Rate:
25 FPS
Matte attached:
No
Alpha channel:
No
Seamless Looping:
No
Duration:
00:00:30,00
Audio:
none

Description

Retina. Coloured scanning electron micrograph (SEM) of a section through a freeze-fractured retina, showing the light-sensitive rods and cones and their associated neurones. Light entering the eyes passes through the bipolar neurones in the nuclear layers (grey, lower frame). It then hits the rods and cones (pink yellow, upper frame). The rods, used in dim light, are found at the retinal margins. The cones, which control colour vision and acuity (sharpness), function best in bright light. They are concentrated in the centre of the retina. Information from both is passed to the neurons, which relay it to the optic nerve (not seen).

Tags for this Stock Video

anatomy bipolar cell cells coloured cone cones eye fibre fibres fracture fractured freeze-fractured ganglion healthy histology human body layer layered layers light-sensitive nerve nervous neuron neurone neurones neurons normal optic optical photoreceptor photoreceptors receptor receptors retina retinal rod rods scanning electron micrograph section sectioned sem sensroy sight tissue vision visual sense no people

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