photoreceptor


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photoreceptor

 [fo″to-re-sep´tor]
a nerve end-organ or receptor sensitive to light.

pho·to·re·cep·tor

(fō'tō-rē-sep'tŏr, -tōr),
A receptor that is sensitive to light, for example, a retinal rod or cone.
Synonym(s): photoceptor
[photo- + L. re-cipio, pp. -ceptus, to receive, fr. capio, to take]

photoreceptor

/pho·to·re·cep·tor/ (-re-sep´ter) a nerve end-organ or receptor sensitive to light.

photoreceptor

(fō′tō-rĭ-sĕp′tər)
n.
A nerve ending, cell, or group of cells specialized to sense or receive light.

photoreceptor

[-risep′tər]
Etymology: Gk, phos, light; L, recipere, to receive
a nerve cell that is receptive to light stimuli.

photoreceptor

Neurology A sensory nerve ending that responds to stimulation by light

pho·to·re·cep·tor

(fō'tō-rĕ-sep'tŏr)
A light-sensitive receptor (e.g., a retinal rod or cone).
[photo- + L. re-cipio, pp. -ceptus, to receive, fr. capio, to take]

photoreceptor

a structure or pigment sensitive to light. In animals such structures are called eyes; they contain sensitive pigments which, when stimulated by light, activate the nervous system. In plants photoreceptors tend to be pigments of various sorts. For example, PHYTOCHROMES sensitive to red light (see PHOTO PERIODISM and flavo-proteins sensitive to blue light trigger AUXIN production, leading to PHOTOTROPISM.

photoreceptor

neurological cell that is sensitive to light, e.g. skin melanocytes

photoreceptor 

A receptor capable of reacting when stimulated by light, such as the rods and cones of the retina. See cone cell; rod cell.

photoreceptor

a nerve end organ or receptor sensitive to light. In the retina of the eye, the outer limbs of rods and cones make up the photoreceptor layer.
References in periodicals archive ?
The cells frequently fail to mature into functional RPE capable of supporting photoreceptors.
When RPGR is flawed, the structure is compromised and photoreceptors cannot function correctly, leading to sight loss.
However, as in the rhabdoms of LE retinular cells and giant VE photoreceptors, the ratio of the opsins coexpressed in small VE photoreceptor rhabdoms changes with time of day.
Beneath the retina is a sheet of black cells called the retinal pigment epithelium (RPE) that supports the retina, but also renews daily the light-absorbing pigments contained in the rod and cone photoreceptors.
Morphologic photoreceptor abnormality in occult macular dystrophy on spectral-domain optical coherence tomography.
In examining controls and exposed mice at postnatal day 60, the researchers found that late-born rod photoreceptors and rod and cone bipolar cells increased by 16-30% in exposed offspring, whereas Muller glial cells (also classified as late-born retinal cells) did not increase.
Light waves that are too short [ultraviolet] or too long [infrared] are not detected in our photoreceptors," says Ribak.
The study, backed by the Medical Research Council and reported in the magazine Nature, is the first showing photoreceptor transplants are possible.
Results: A GFP reporter plasmid construct utilizing the SGR/BC promoter demonstrated GFP expression in photoreceptor cells adjacent to the retinal pigment epithelium.
Optical MEMS devices could eventually eliminate the need for high-cost precision manufacturing of components that stabilize movement in Xerox photoreceptor belts.
The next step was to examine the mechanical interaction between the retinal and photoreceptor layers.
Consider the neural wiring for the human eye's light-sensing retinal photoreceptor cells.