Question

How do the rods and cones differ functionally describe the process of photoreception?

Please type text and more than 150 words please

Answer 1

ANSWER--

Photoreception is the process of the detection of light and vision formation.

process of photoreception is done by the rods and the cones present in human eye.

rods and cones are different in function as they use to provide the vision in opposite conditon .

Rods use to provide a eye vision in the low or dim light and known to provide scotopic vision.

Cones use to provide a eye vision in the day time or bright light and called as photopic vision.

and so due to the working in the low light rods do not supports or provide the colour vision while cones use to provide the colour vision.

rods are founds to be present on the periphery of the retina while the cones are found to be in the center of the retina.

photoreceptor are about 125 millions in the body out of which 120 millions are found to be the rods and remaining are cones.

rods do contains the rhodopsin and cones carry the iodopsin, and so the lack of the rhodopsin pigment causes the night blindness and that of iodopsin is called colour blindness.

these are the functions of the cones and rods and they function differentially on the basis of the providing vision on the light present.

photoreceptor is the process in which rods and cones absorbs the light and converts these light signals into electrical signals and send them to the brain.

These photoreceptors are present in the retina , retina is a structure present in the nervous coat present in eye which takes part in production of the vision,.

Its first layer is the epithelial cells which absorbs the light and no the scattering of light occurs due to this second layer is called photoreceptor layer which performs the photoreception.

Rods and Cones are the neurons which takes up the light and they depolarise to send the signal in form of electricals to the brain.

when electrical impulse are generated they are send upto the viusal cortex via bipolar cells and ganglion cells.

These signals are sent upto visual cortex via optic nerve and chiasma and then the reflex of the electrical signal the vision is produced in the retina.

Good wishes.