Asked by Karen Porter on Sep 24, 2024
Verified
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.
Melanin Pigment
A natural pigment found in most organisms, responsible for hair, skin, and eye color; provides protection against UV radiation.
Choroid
A layer of blood vessels and connective tissue between the sclera and retina in the eye, providing oxygen and nourishment to the outer layers of the retina.
Pigmented Epithelium
Specialized epithelial cells that contain pigment granules, involved in coloration and protection against sunlight, such as those found in the retina.
- Determine the structure and individual components of the retinal layers.
Verified Answer
JM
Joyce Marugu3 days ago
Final Answer :
C
Explanation :
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.
Learning Objectives
- Determine the structure and individual components of the retinal layers.