rod cell


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Related to rod cell: cone cell
Neuroanatomy A retinal photoreceptor for colourless low-light vision
Neuropathology A modified microglial cell that increases in size and number in paretic dementia (3º syphilis) and subacute encephalitides (e.g., encephalitis lethargica and cerebral trypanosomiasis)

rod

(rod)
1. A straight, slender, cylindric structure or device. For surgical rods, see nail;pin
2. The photosensitive, outward-directed process of a rhodopsin-containing rod cell in the external granular layer of the retina; many millions of such rods, together with the cones, form the photoreceptive layer of rods and cones.
Synonym(s): rod cell.
[A.S. rōd]

rod

or

rod cell

a rod-shaped, light-sensitive cell lying in the more peripheral parts of the RETINA in the vertebrate eye. Rods are particularly associated with vision under conditions of low illumination and they occur in large numbers in nocturnal animals. They are not capable of colour discrimination and their visual acuity is poor (compare CONE CELL). RHODOPSIN (visual purple) is found in rods. There are some 240 million rods in the retinas of a primate.see RETINAL CONVERGENCE.

rod

(rod)
1. A straight, slender, cylindric structure or device.
2. The photosensitive, outward-directed process of a rhodopsin-containing rod cell in the external granular layer of the retina.
[A.S. rōd]
References in periodicals archive ?
They found that eyes containing altered Pias3 did not develop the correct number of rod cells, suggesting that Pias3's SUMOylation activity was the key to its ability to promote rod and suppress cone cell development in the eye.
For the blind mice, Swaroop and other researchers would have to figure out how to make new rod cells.
These cells, called rod cells and cone cells, are attached to nerve cells that send signals to the brain.
Rod cells are more numerous than cone cells and are crucial for vision at night and in other low lighting conditions.
In the dark, only the rod cells around the outside of your retina are active and allow you to see in darkened conditions.
To experience your own night vision, sit in a darkened room for 20 minutes to bring your rod cells into action.
There is growing evidence that rod cells keep cone cells alive by secreting a special factor.
The study results provide evidence that the eye's rod cells may be a possible therapeutic target in neurovascular diseases such as retinopathy of prematurity.
Rod cells are especially important for seeing in the dark as they are extremely sensitive to even low levels of light.