The mucous membrane that protects the exposed eyeball surface is the named structure of what?

The mucous membrane that protects the exposed eyeball surface is the named structure of what?

• A. Conjunctiva
• B. Retina
• C. Cornea
• D. Iris

Answer: (A)

A mucous membrane lines surfaces exposed to the outside world and keeps them moist, protecting delicate tissues. In the eye, that membrane is the conjunctiva, which covers the white part of the eye (the sclera) at the front and lines the inner surfaces of the eyelids. It provides a moisture layer with mucus and helps trap dust and microbes, contributing to protection and comfort of the eye. The other structures have different roles: the retina is the light-sensitive tissue at the back of the eye, the cornea is the clear front surface that refracts light, and the iris is the pigmented muscular ring that controls pupil size. So the mucous membrane protecting the exposed eyeball surface is the conjunctiva.

A mucous membrane lines surfaces exposed to the outside world and keeps them moist, protecting delicate tissues. In the eye, that membrane is the conjunctiva, which covers the white part of the eye (the sclera) at the front and lines the inner surfaces of the eyelids. It provides a moisture layer with mucus and helps trap dust and microbes, contributing to protection and comfort of the eye. The other structures have different roles: the retina is the light-sensitive tissue at the back of the eye, the cornea is the clear front surface that refracts light, and the iris is the pigmented muscular ring that controls pupil size. So the mucous membrane protecting the exposed eyeball surface is the conjunctiva.