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Contact: Nicolás Cuenca (cuenca@ua.es)

title

   Photoreceptor varieties

DESCRIPTION

 

Photoreceptor varieties  - Mouse
Photoreceptor varieties - Xenopus
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Xenopus
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Xenopus
Photoreceptor varieties  - Xenopus
Photoreceptor varieties - Xenopus
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Carp
Xenopus    Xenopus    Xenopus    Xenopus    Carp   
              
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Chicken
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Chicken
Photoreceptor varieties  - Chicken
Photoreceptor varieties - Mouse
Photoreceptor varieties  - Mouse
Photoreceptor varieties - Mouse
Photoreceptor varieties  - Bovine
Photoreceptor varieties - Squirrel
Chicken    Chicken    Mouse    Mouse    Squirrel   
              
Photoreceptor varieties  - Bovine
Photoreceptor varieties - Squirrel
Photoreceptor varieties  - Cat
Photoreceptor varieties - Cat
Photoreceptor varieties  - Chicken
Photoreceptor varieties - Bovine
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Monkey
Squirrel    Cat    Bovine    Monkey    Monkey   
              
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties - Monkey
Monkey    Monkey    Monkey    Monkey    Monkey   
              
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Monkey
Photoreceptor varieties  - Xenopus
Photoreceptor varieties - Monkey
Photoreceptor varieties  - Squirrel
Photoreceptor varieties - Rat
Photoreceptor varieties  - Squirrel
Photoreceptor varieties - Turtle
Photoreceptor varieties  - Monkey
Photoreceptor varieties - Monkey
Monkey    Monkey    Rat    Turtle    Monkey   
              

 

 

 

Photoreceptors are photosensitive neurons in the outer part of the retina. In a process known as phototransduction, photoreceptors convert light information into electrical signals. Visual pigments in photoreceptor outer segments absorb incident photons and initiate a series of specific and complex biochemical reactions that change the membrane potential of the cells. This information is used by the visual system to form a complete representation of the visual world. In vertebrates, there are two types of photoreceptor cells: cones and rods. Cones are adapted to detect fine detail, central and colors vision and function well in bright light. Rods are responsible for peripheral and dim light vision. The number and ratio of rods to cones varies among animals, dependent on whether the animal is primarily diurnal or nocturnal.

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 Image use

The entire contents of this site are copyrighted. Images may be downloaded from this site for educational, non-profit use only (such as a school report). If you need higher resolution images, please contact me: Nicolás Cuenca (cuenca@ua.es).

 

 Credits

This webpage is a creation of Nicolás Cuenca of the Department of Physiology, Genetics and Microbiology at the University of Alicante.

 

 Thanks to

Technical research services of the University of Alicante.

 

© 2008 Todos los Derechos Reservados a Nicolás Cuenca Navarro

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