Biology, asked by laajshd, 11 months ago

what is pupil arc?????​

Answers

Answered by Anonymous
1

Hey

The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity (luminance) of light that falls on the retinal ganglion cells of the retina in the back of the eye, thereby assisting in adaptation of vision to various levels of lightness/darkness. A greater intensity of light causes the pupil to constrict (miosis/myosis; thereby allowing less light in), whereas a lower intensity of light causes the pupil to dilate (mydriasis, expansion; thereby allowing more light in). Thus, the pupillary light reflex regulates the intensity of light entering the eye.[1] Light shone into one eye will cause both pupils to constrict.

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Answered by Anonymous
5

Answer:

Hey here is your answer

Explanation:

Pupil arc

Pupil arc, cross-section view. The dotted line represents the efferent pathway; the solid line represents the afferent pathway. A light stimulating the left retina generates impulses that travel up the left optic nerve and divide at the chiasm

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