Question 26

The choroid is filled with blood vessels that bring oxygen and nutrients to the eye.

The choroid is a layer of tissue filled with blood vessels that supplies oxygen and nutrients to the outer layers of the retina in the eye.

A) Choroid

This option is correct because the choroid is a vascular layer located between the retina and the sclera, rich in blood vessels that provide essential nutrients and oxygen to the eye. Its primary function is to nourish the retina, making it critical for maintaining healthy vision.

B) Cornea

The cornea is not filled with blood vessels; instead, it is a transparent layer that covers the front of the eye. It receives oxygen directly from the air and nutrients from the tear fluid, but it does not have a vascular supply, which makes this option incorrect.

C) Sclera

The sclera is the white outer coating of the eyeball, providing structural support and protection. While it is a tough layer, it is not filled with blood vessels and does not play a direct role in supplying oxygen and nutrients to the eye, rendering this option incorrect.

D) Retina

The retina contains photoreceptor cells and is responsible for converting light into neural signals. However, it relies on the choroid for oxygen and nutrients through its blood supply, which means this option is incorrect as it does not directly provide the required resources.

Conclusion

The choroid is the only structure among the options that is specifically filled with blood vessels that deliver oxygen and nutrients to the eye, making it the definitive correct answer. The other options either lack a vascular supply or serve different functions within the eye, underscoring the unique role of the choroid in ocular health.