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4. If you were explaining the optic disc to your lab partner, you would likely make all of the following points except:

A. It is the part of the retina with the highest visual acuity.
B. It is the site where axons of all the sensory receptors send their projections.
C. It doesn't include any photoreceptors.
D. It is the lightest part of the retina.

Sagot :

Final answer:

The optic disc lacks photoreceptors and is responsible for the blind spot. The fovea, not the optic disc, is the area with the highest visual acuity in the retina.


Explanation:

The Optic Disc, also known as the optic nerve head, is a circular area in the back of the eye where the optic nerve exits. It lacks photoreceptors, creating a blind spot in our visual field due to the absence of light-sensitive cells. The fovea, not the optic disc, is the region of the retina with the highest visual acuity, mainly due to its concentration of cone photoreceptors.


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