Question

question 18
which of the following sequences correctly indicates the pathway of light on its way from the eye to the brain?
pupil, cornea, lens, retina, optic nerve, brain
pupil, cornea, fovea, lens, optic nerve, brain
bipolar cells, receptor cells, ganglion cells, optic nerve
optic nerve, fovea, iris, pupil, retina

Explanation:

Light first enters the eye through the cornea, then passes through the pupil. After that, it is focused by the lens onto the retina. The photoreceptor cells in the retina convert light - energy into neural signals. These signals are then transmitted via bipolar cells and ganglion cells to the optic nerve, which carries the information to the brain.

Answer:

None of the provided options are completely correct. The correct sequence is cornea, pupil, lens, retina (with bipolar and ganglion cells within it), optic nerve, brain. But if we consider the options given and assume some simplification, the closest one is the first option "pupil, cornea, lens, retina, optic nerve, brain" with the cornea and pupil order reversed. If we have to choose from the given options, the best - fit would be: pupil, cornea, lens, retina, optic nerve, brain (even though the initial two should be in reverse order).