photoreceptor
Eye's light sensor
A photoreceptor is a cell or structure that responds to light.
In the eye, photoreceptors are the rods and cones of the retina that convert light into nerve signals, enabling vision.
In plants, photoreceptors detect light to regulate growth and flowering.
The term also applies to light-sensitive components in cameras and other devices.
Thin rigid stick
- coneTapered solid, circular base
- photopigmentLight-absorbing retinal molecule
- foveaRetinal depression for acuity
- maculaRetinal region for acuity
retina · disc · bleaching · scotopic · night vision · color vision
Excessive membrane voltage negativity
- calciumElement twenty, builds bones
- neurotransmitterSynaptic chemical messenger
- synapseNerve signal crossing point
- visual cortexBrain's sight-processing region
Light-to-current semiconductor
- phototransistorLight-sensitive amplifying component
- solar cellLight-to-current converter
- CCDLight-sensitive imaging chip
- pixelSmallest display unit
image sensor · photoelectric · photovoltaic · optical sensor · camera sensor
Circular marking resembling an iris
- ocellusSimple photoreceptive organ
- compound eyeMulti-lensed arthropod organ
- circadian rhythmBuilt-in sleep-wake cycle
- pineal glandMelatonin-secreting brain structure
rod
Thin rigid stick
- coneTapered solid, circular base
- photopigmentLight-absorbing retinal molecule
- foveaRetinal depression for acuity
macula · retina · disc · bleaching · scotopic · night vision · color vision
hyperpolarization
Excessive membrane voltage negativity
- calciumElement twenty, builds bones
- neurotransmitterSynaptic chemical messenger
- synapseNerve signal crossing point
visual cortex · optic nerve · action potential · glutamate · depolarization
photodiode
Light-to-current semiconductor
- phototransistorLight-sensitive amplifying component
- solar cellLight-to-current converter
- CCDLight-sensitive imaging chip
pixel · image sensor · photoelectric · photovoltaic · optical sensor · camera sensor
eyespot
Circular marking resembling an iris
- ocellusSimple photoreceptive organ
- compound eyeMulti-lensed arthropod organ
- circadian rhythmBuilt-in sleep-wake cycle
- cellscells, blood cell, cell theory, nerve cell, red blood cell
- eye anatomyeyeball, cornea, iris, retina, pupil
- light-sensitivephotocells, photodiodes, photodiode, photoresistor, transition lenses
- sensory organsear, nose, eyes, tongue, skin
- photobiologyphotosynthesis, phototropism, photoreception, photoperiod, photomorphogenesis
- receptorssensory receptors, dopamine receptors, adrenergic receptors, GABA receptors, taste receptors
photoreceptormechanoreceptor
Sensory cell for pressure
chemoreceptor · thermoreceptor · electroreceptor · taste receptor · hair cell