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3D gridbuilding - science

3D GRIDBUILDING - SCIENCE - BIOLOGY

PHOTORECEPTORS

3D gridbuilding - science

3D gridbuilding - science - biology - chemistry - physics
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graphic by Corel, Canada




do you have an original graphic we could add here, relating to 'photoreceptors'? please see the main Gridbuilding page for details of how to get in touch




do you have an original graphic we could add here, relating to 'photoreceptors'? please see the main Gridbuilding page for details of how to get in touch




do you have an original graphic we could add here, relating to 'photoreceptors'? please see the main Gridbuilding page for details of how to get in touch




Photoreceptors are cells which are specialised for the detection of light (for example, the rod and cone cells in the retina of the human eye, or the individual pigment cells in some invertebrates).


Photoreceptors contain deposits of pigment at one end, and an axon at the other.


The molecules of pigment actually undergo a change in shape when photons of light hit them.


This change in shape causes a change in the permeability of the cell membrane, to which the pigment is also bound, which changes the relative amounts of flow of certain ions across it.


This causes an electrical impulse (nerve impulse) to travel down the axon and, from there, onwards into the nervous system, in animals where one is present.



Anne Evans



~   FORWARD LINKS   ~
amounts
animals
axons
cause
cell membranes
cells
change
cones
contain
deposition
detection
electrical
electrical
impulse
end
example
eyes
flow
hit
human
impulses
individual
invertebrates
ions
light
membranes
molecules
nerve impulse
nerves
nervous
nervous system
permeability
photons
PHOTORECEPTORS
pigments
present
relative
retina
rods
shape
specialization
specialization
for function
systems
travel
undergo
~   FORWARD LINKS   ~
BACK LINKS
cones
PHOTORECEPTORS
retina
BACK LINKS

A-Z sundry physics biology chemistry A-Z Physics A-Z Biology A-Z Chemistry A-Z sundry A-Z

3D gridbuilding - science - biology - chemistry - physics
"FORWARD LINKS" go to factors that "photoreceptors" mentions ...
3D gridbuilding - science - biology - chemistry - physics
... "BACK LINKS" go to pages that mention "photoreceptors" (to provide context and more info)
3D gridbuilding - science - biology - chemistry - physics

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