Question...please help! (1 Viewer)

[Mind-of-mysterY]

Outline how light reaching the retine is transformed into an electrical impulse. What happens to these impulses?

please help...

 

[lala2]

There are basically three layers of cells on the retina. Photoreceptors (on top) --> bipolar --> ganglion. Rhodopsin, the pigment in rods, when hit by light, forms retinal and opsin. Signal travels to bipolar then to gangilon. This generates an electrical signal in the ganglion cell and the impulse travels via the optic nerve (which is a bundle of ganglion cell axons) to the optic chiasm, then via the optic tracts to the visual cortex of the brain (located in the occipital lobe), where they get interpreted.

 

[Mind-of-mysterY]

thankyou so much for ur help