Vision is enabled when the impulse from the retina reaches the cerebru

1.	Vision is enabled when the impulse from the retina reaches the cerebrum through the optic nerve.a) Draw a flow chart showing the pathway of light from cornea to retina.b) There is no vision at the point where the optic nerve starts. Why?
Answer» a) Light → Cornea → Aqueous humor → Pupil → Lens → Vitreous humor → Retina. b) Rod cells and cone cells are absent in the part from where the optic nerve starts photoreceptors are absent. So there is no vision.

Vision is enabled when the impulse from the retina reaches the cerebrum through the optic nerve.a) Draw a flow chart showing the pathway of light from cornea to retina.b) There is no vision at the point where the optic nerve starts. Why?

Answer»

a) Light → Cornea → Aqueous humor → Pupil → Lens → Vitreous humor → Retina.

b) Rod cells and cone cells are absent in the part from where the optic nerve starts photoreceptors are absent. So there is no vision.

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Vision is enabled when the impulse from the retina reaches the cerebrum through the optic nerve.a) Draw a flow chart showing the pathway of light from cornea to retina.b) There is no vision at the point where the optic nerve starts. Why?

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