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Clip Details
Clip ID#:
4844213
Number of Views:
35
Model Released:
No
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Date Uploaded:
6 May 2011
Date Created:
16 Jun 2009
Frame Rate:
25 FPS
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No
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No
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No
Duration:
00:00:22,00
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none

Description

Retina rod cells. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through a retina, revealing the structure of its photoreceptors. Photoreceptors with these rod-like outer parts (green) are named rod cells (rather than cone cells) and contain the protein rhodopsin (visual purple) that aids vision in dim light. The inner parts (orange) lead to the nuclei (blue red, top). Empty spaces in this layer show Muller cells that provide a fibrous support for photoreceptors. Light triggers signals in the photoreceptors after passing through a neuron layer (above nuclei, not seen). These signals travel to the neurons and on to the brain.

Tags for this videos

anatomy cell cells coloured eye fibrous fracture fractured freeze-fracture freeze-fractured healthy histology human body images inner layer layered layers light-sensitive magnified image microscopic photos muller normal nuclei nucleus optic optical outer photoreceptor photoreceptors pigment epithelium receptor receptors retina retina rod cells retinal rod rods scanning electron micrograph section sectioned sem sensory sight subjects supportive tissue vision visual sense no people

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