All of the following structures in the eye are black, due to the presence of melanin pigment, except
A)the choroid.
B)the ciliary body.
C)the retina.
D)the pigmented epithelium.
E)All of these eye structures are black, due to the presence of melanin pigment.

Question

Quizplus · Accepted Answer

The retina does not contain melanin pigment and is instead transparent to allow light to pass through and be detected by photoreceptor cells. The other structures listed (choroid, ciliary body, and pigmented epithelium) contain melanin pigment to protect from excess light and absorb scattered light, giving the overall appearance of a black color in these areas.

All of the Following Structures in the Eye Are Black