What does photoreceptor cell mean?
Definitions for photoreceptor cell
pho·tore·cep·tor cell
This dictionary definitions page includes all the possible meanings, example usage and translations of the word photoreceptor cell.
Wikidata
Photoreceptor cell
A photoreceptor cell is a specialized type of neuron found in the retina that is capable of phototransduction. The great biological importance of photoreceptors is that they convert light into signals that can stimulate biological processes. To be more specific, photoreceptor proteins in the cell absorb photons, triggering a change in the cell's membrane potential. The two classic photoreceptor cells are rods and cones, each contributing information used by the visual system to form a representation of the visual world, sight. The rods are narrower than the cones and distributed differently across the retina, but the chemical process in each that supports phototransduction is similar. A third class of photoreceptor cells was discovered during the 1990s: the photosensitive ganglion cells. These cells do not contribute to sight directly, but are thought to support circadian rhythms and pupillary reflex. There are major functional differences between the rods and cones. Rods are extremely sensitive, and can be triggered by as few as 6 photons. At very low light levels, visual experience is based solely on the rod signal. This explains why colors cannot be seen at low light levels: only one type of photoreceptor cell is active.
Numerology
Chaldean Numerology
The numerical value of photoreceptor cell in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of photoreceptor cell in Pythagorean Numerology is: 8
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"photoreceptor cell." Definitions.net. STANDS4 LLC, 2024. Web. 1 May 2024. <https://www.definitions.net/definition/photoreceptor+cell>.
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